Topology of modified helical gears /

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Bibliographic Details
Imprint:	[Washington, D.C.] : National Aeronautics and Space Administration ; [St. Louis, Mo.] : US Army Aviation Systems Command ; [Springfield, Va. :] : [For sale by the National Technical Information Service], [1989]
Description:	18 pages : illustrations.
Language:	English
Series:	NASA technical memorandum ; 102134 AVSCOM technical report ; 89-C-004 NASA technical memorandum ; 102134. AVSCOM technical report ; 89-C-004.
Subject:	Gearing, Spiral.
Format:	E-Resource Microform U.S. Federal Government Document Book
URL for this record:	http://pi.lib.uchicago.edu/1001/cat/bib/12688840

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Other authors / contributors:	Litvin, F. L. (Faydor L.) United States. Army Aviation Systems Command. United States. National Aeronautics and Space Administration.
Notes:	Includes bibliographical references (page 10). Available via Internet from the NTRS web site. Address as of 04/17/08: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890018644%5F1989018644.pdf ; current access is available via PURL.
GPO item no.:	0830-D (MF) 0830-D (online)
Govt.docs classification:	NAS 1.15:102134

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