000180249 000__ 01612fam\a2200349\i\4500
000180249 001__ 180249
000180249 005__ 20220217103603.0
000180249 008__ 790206s1978\\\\dcua\\\\\b\\\f00010\eng\d
000180249 035__ $$a(OCoLC)ocm04621356
000180249 035__ $$agp 79008324
000180249 035__ $$9(IS)TUT8588
000180249 035__ $$9AAU8765SI
000180249 035__ $$a180249
000180249 037__ $$a22161
000180249 040__ $$aGPO$$cGPO
000180249 074__ $$a830-H-10 (microfiche)
000180249 086__ $$aNAS 1.55:2052/pt.1$$aNAS 1.55:2052/pt.2
000180249 099__ $$aNAS 1.55:2052/pt.1$$aNAS 1.55:2052/pt.2
000180249 1112_ $$aInternational Specialists Symposium on Helicopter Acoustics$$d(1978 :$$cLangley Research Center)
000180249 24510 $$aHelicopter acoustics :$$bproceedings of an International           Specialists Symposium sponsored by the American Helicopter Society, Washington, D.C.; the U.S. Army Research Office, Durham, North Carolina; and the Langley    Research Center, Hampton, Virginia, and held at Langley Research Center, May 22-24, 1978.
000180249 260__ $$a[Washington] :$$bNational Aeronautics and Space Administration,    Scientific and Technical Information Office ;$$aSpringfield, Va. :$$bfor sale by the National Technical Information Service,$$c1978.
000180249 300__ $$a2 pts. :$$bill. ;$$c27 cm.
000180249 4901_ $$aNASA conference publication ; 2052
000180249 504__ $$aIncludes bibliographical references.
000180249 650_0 $$aHelicopters$$vCongresses.
000180249 650_0 $$aAcoustical engineering$$vCongresses.
000180249 650_0 $$aNoise control$$vCongresses.
000180249 7101_ $$aUnited States.$$bArmy Research Office.
000180249 7102_ $$aAmerican Helicopter Society.
000180249 7102_ $$aLangley Research Center.
000180249 830_0 $$aNASA conference publication ;$$v2052.
000180249 85231 $$bdfich$$hNAS 1.55:$$i2052/
000180249 909CO $$ooai:library.usi.edu:180249$$pGLOBAL_SET
000180249 948__ $$ac:jb
000180249 980__ $$aBIB
000180249 980__ $$aGOV RESOURCE