[publisher not identified], 1993
Buku Teks
Opec Fund., 2004
Multimedia
edited by Lewis M. Alexander
University of Rhode Island, 1969
Buku Teks
National Academy of Sciences-National Academy of Engineering , 1973
Buku Teks
Badan Pengkajian dan Penerapan Teknologi, 2009
Buku Teks