@book{3721,
	author = {Holtz, Robert D., and Kovacs, William D.,},
	title = {An introduction to geotechnical engineering /},
	publisher = {Prentice Hall,},
	year = {c1981.},
	series = {Prentice-Hall civil engineering and engineering mechanics series.},
	address = {Englewood Cliffs, N.J. :},
	note = {Includes index.}
}