@book{14763,
	author = {ASTM Committee D-18 on Soils for Engineering Purposes.},
	title = {Symposium on nuclear methods for measuring soil density and moisture :},
	publisher = {American Society for Testing Materials,},
	year = {c1961},
	series = {ASTM special technical publication},
	address = {Philadelphia :},
	note = {"Sponsored by Subcommittee R-3 on Research on Special and Construction Control Tests."}
}