div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader042fdocumentpubreader042viewer20220130205eb007e6777d4d2a891ef969html5page1jpg target=_blank img data-url=documentffffeec-cc-vol-8htmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: ヘリコプターの騒音とその対策 - 川田工業株式会社vol 8 JAN 1989 Jll Tadahiro KA WADA Helicopter Noise and Its Reduction Tsutomu YABU Circ 70 YR22J CD hoc loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentpubreader042viewer20220130205eb007e6777d4d2a891ef969html5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader042fdocumentpubreader042viewer20220130205eb007e6777d4d2a891ef969html5page2jpg target=_blank img data-url=documentffffeec-cc-vol-8htmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: ヘリコプターの騒音とその対策 - 川田工業株式会社vol 8 JAN 1989 Jll Tadahiro KA WADA Helicopter Noise and Its Reduction Tsutomu YABU Circ 70 YR22J CD hoc loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentpubreader042viewer20220130205eb007e6777d4d2a891ef969html5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader042fdocumentpubreader042viewer20220130205eb007e6777d4d2a891ef969html5page3jpg target=_blank img data-url=documentffffeec-cc-vol-8htmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: ヘリコプターの騒音とその対策 - 川田工業株式会社vol 8 JAN 1989 Jll Tadahiro KA WADA Helicopter Noise and Its Reduction Tsutomu YABU Circ 70 YR22J CD hoc loading=lazy...