APO, 1990
Buku Teks
edited by Paul N. Cheremisinoff, Robert P. Quellette
Pennsylvania Technomic , 1997
Buku Teks
Rittman, Bruce E., author
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Buku Teks
Sobti, R.C., author
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Buku Teks
edited by Martin Fransman, Gerd Junne and Annemieke Roobeek
Blackwell, 1995
Buku Teks