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Nuclear Meters for Measuring Soil Density and Moisture in Thin Surface Layers

D. J. BelcherH. S. SackT. R. Cuykendall

出版	Civil Aeronautics Administration Technical Development and Evaluation Center, 1952
URL	http://books.google.com.hk/books?id=wC1BAAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN