Wray, Warren K. Measuring engineering properties of soil / Warren K. Wray. - Englewood Cliffs, NJ : Prentice-Hall, c1986. - xii, 276 p. : ill. - Prentice-Hall international series in civil engineering and engineering mechanics . ISBN: 013568577X (pbk.) Subjects--Topical Terms: Soils--Testing--Laboratory manuals.Soil mechanics--Laboratory manuals. LC Class. No.: TA710.5 / .W73 1986 Dewey Class. No.: 624.1/5136�19