Gemala Firyanka
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2015
UI - Skripsi Membership
Koch, Adrienne
Modern Library, 1944
Buku Teks
Douglass, Frederick
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Buku Teks
Nagai, Michio
The Carnegie Commission on Higher Education , 1975
Buku Teks
edited by William R. Spriegel and Clark E. Myers
R.D. Irwin, 1953
Buku Teks