1
Published 2007
2
Published 2007
3
Published 1999
4
by Pachauri
Published 1971
5
Published 2004
6
7
by Mukherjea
Published 1967
8
by Bal Ram Jakhar
Published 1982
9
Published 2005
10
11
Published 2002
12
Published 2003
13
Published 2002