1
by Miller, Margaret
Published 1965
2
Published 1996
3
by Agarwala, A. N, 1917-
Published 1958
4
by Hope, Kempe Ronald
Published 1996
5
by Seitz, John L, 1931-
Published 2002
6
by Okposin, Samuel Bassey
Published 2003
7
by Bhagawati, Jagdish N, 1934-
Published 1966
8
by George, Robert Lloyd
Published 1992
9
10
Published 1978
11
12
Published 1999
13
by Cherry, Judith
Published 1993
14
15
Published 2002
16
by Hossain, Moazzem
Published 1999
17
by Chhon, Keat
Published 1999
18
by Boserup, Ester
Published 1990
19
by Mundschenk S.
Published 2006
20