Rosenblatt, Joe, author
Top soil
Press Porcepic, 1976
Buku Teks
Elliott, Osborn, author
Men at the top
Harper & Brothers , 1959
Buku Teks
Ziglar, Zig, author
Steps to the top
Heinemann Asia, 1995
Buku Teks
Unsaturated soil
ASCE, 1993
Buku Teks
Craig, R.F. (Robert F.), author
Soil mechanics
Chapman & Hall , 1992
Buku Teks
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