Ghosh, D.
S.l. s.n. 19-,
Buku Teks
Chandrasekhar, S., author
George Allen and Unwin, 1955
Buku Teks
Coale, Ansley J., author
Princeton University Press, 1961
Buku Teks
Coale, Ansley J., author
Princeton University PRess, 1972
Buku Teks
Coale, Ansley J., author
Princeton University Press, 1958
Buku Teks