Stanford University Press, 1959
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Robi Sobirin, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2017
UI - Tesis (Membership)
Artikel Jurnal
Kirkpatrick, Charles A., author
South-Western Publishing Company, 1966
Buku Teks
David E. Reisner
CRC Press, 2009
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