Sinha, V. C.
New Delhi Allied , 1984
Buku Teks
Hertzler, Joyce O., author
University of Nebraska Press , 1956
Buku Teks
Hertzler, Joyce O., author
University of Nebraska Press , 1956
Buku Teks
Borrie, W.B., author
Weidenfeld and Nicolson, 1970
Buku Teks
The Population Reference Bureau, Inc., 1976
Buku Teks