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Buku Teks
Gerstein, Larry J., authir
[Springer, ], 2012
eBooks
Carnap, Rudolf
Dover Publications, 1958
Buku Teks
Sulistomo Adie Suwarno
Universitas Indonesia, 2005
UI - Skripsi Membership
Ummu Maemunah
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2006
UI - Skripsi Membership