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Atlas Resources Public #18-2008 (A) L.P.

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EX-10.1
from 8-K 13 pages Assignment and Bill of Sale
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EX-10.36
from POS AM 46 pages Gas Gathering Agreement for Natural Gas on the Expansion Gathering System Dated as of June 1, 2009 Between Laurel Mountain Midstream, LLC and Atlas America, LLC Atlas Energy Resources, LLC Atlas Energy Operating Company, LLC Atlas Noble LLC Resource Energy LLC Viking Resources, LLC Atlas Pipeline Partners, L.P. Atlas Pipeline Operating Partnership, LP
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EX-10.35
from POS AM 46 pages Gas Gathering Agreement for Natural Gas on the Legacy Appalachian System Dated as of June 1, 2009 Between Laurel Mountain Midstream, LLC and Atlas America, LLC Atlas Energy Resources, LLC Atlas Energy Operating Company, LLC Atlas Noble LLC Resource Energy LLC Viking Resources, LLC Atlas Pipeline Partners, L.P. Atlas Pipeline Operating Partnership, LP
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EX-10.34
from POS EX 58 pages Agreement and Plan of Merger Agreement and Plan of Merger by and Among Atlas Energy Resources, LLC, Atlas America, Inc., Atlas Energy Management, Inc. and Merger Sub, as Defined Herein Dated as of April 27, 2009
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EX-10.33
from POS EX 76 pages Formation and Exchange Agreement Formation and Exchange Agreement by and Among Williams Field Services Group, LLC, Williams Laurel Mountain, LLC Atlas Pipeline Partners, L.P. Atlas Pipeline Operating Partnership, L.P. and Apl Laurel Mountain, LLC March 31, 2009
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EX-10.2
from POS AM 13 pages Escrow Agreement Atlas Resources Public #18-2009(b) L.P. Atlas Resources Public #18-2009(b) L.P. Escrow Agreement
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EX-10.1
from S-1/A 13 pages Escrow Agreement Atlas Resources Public #18-2008(A) L.P. Atlas Resources Public #18-2008(A) L.P. Escrow Agreement
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EX-10.32
from S-1 28 pages Registration Rights Agreement Dated as of June 29, 2007
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EX-10.31
from S-1 5 pages Voting Agreement Dated as of June 29, 2007 Between Atlas America, Inc. and Atlas Energy Management, Inc. Voting Agreement
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EX-10.29
from S-1 18 pages Amendment No. 1 to Amended and Restated Operating Agreement of Atlas Energy Resources, LLC Dated June 29, 2007 Class D Amendment Amendment No. 1 to Amended and Restated Operating Agreement of Atlas Energy Resources, LLC
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EX-10.28
from S-1 10 pages Continuing Guaranty Agreement Dated December 18, 2006 by Atlas Energy Resources, LLC in Favor of Wachovia Bank, National Association, as Administrative Agent for the Lenders
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EX-10.26
from S-1 6 pages Amendment and Joinder to Gas Gathering Agreements Dated December 18, 2006, Among Atlas Pipeline Partners, L.P. and Atlas Pipeline Operating Partnership, L.P., Atlas America, Inc., Resource Energy, LLC, Viking Resources, LLC, Atlas Noble, LLC, Atlas Resources, LLC, Atlas America, LLC, Atlas Energy Resources, LLC, and Atlas Energy Operating Company, LLC Amendment and Joinder to Gas Gathering Agreements
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EX-10.25
from S-1 6 pages Amendment and Joinder to Omnibus Agreement Dated December 18, 2006, Among Atlas Pipeline Partners, L.P. and Atlas Pipeline Operating Partnership, L.P., Atlas America, Inc., Resource Energy, LLC, Viking Resources, LLC, Atlas Energy Resources, LLC, and Atlas Energy Operating Company, LLC
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EX-10.24
from S-1 17 pages Management Agreement Dated December 18, 2006 Among Atlas Energy Resources, LLC, Atlas Energy Operating Company, LLC, and Atlas Energy Management, Inc. 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
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EX-10.23
from S-1 7 pages Omnibus Agreement Dated December 18, 2006 Between Atlas Energy Resources, LLC and Atlas America, Inc
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EX-10.22
from S-1 24 pages Contribution, Conveyance and Assumption Agreement Dated December 18, 2006 Among Atlas America, Inc., Atlas Energy Resources, LLC, and Atlas Energy Operating Company, LLC
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EX-10.21
from S-1 5 pages Amendment Among Atlas Pipeline Partners, L.P. and Atlas Pipeline Operating Partnership, L.P., Atlas America, Inc., Resource Energy, Inc., Viking Resources Corporation, Atlas Noble Corp., and Atlas Resources, Inc. to the Master Natural Gas Gathering Agreement Dated February 2, 2000 and the Natural Gas Gathering Agreement Dated January 1, 2002
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EX-10.20
from S-1 5 pages Guaranty Dated January 1, 2005 Between Ugi Corporation and Viking Resources Corp
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EX-10.19
from S-1 3 pages Transaction Confirmation Dated December 14, 2004 Between Atlas America, Inc. and Ugi Energy Services, Inc. D/B/a Gasmark
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EX-10.18
from S-1 4 pages Confirmation of Gas Purchase and Sales Agreement Dated November 17, 2004 Between Atlas Resources, Inc. Et. Al. and First Energy Solutions Corp. for the Period From April 1, 2006 Through March 31, 2007 Production/Calendar Periods Page 2 Page 3
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