Liptrot, G.F.
The English Language Book Society, 1974
Buku Teks
Laely Amaliyah, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2022
UI - Tesis (Membership)
Sienko, Michell J., author
McGraw-Hill Kogakusha, 1961
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Busch, Daryle H., author
Allyn and Bacon , 1978
Buku Teks
Busch, Daryle H., author
Allyn and Bacon, 1973
Buku Teks