"General Studies Manual 2007 for the UPSC, Civil Services Preliminary Examination Vol. I"
Thorpe E & Thorpe S
"General Studies Manual 2007 for the UPSC, Civil Services Preliminary Examination Vol. I" - Pearson Education 2007
General Knowledge
"General Studies Manual 2007 for the UPSC, Civil Services Preliminary Examination Vol. I" - Pearson Education 2007
General Knowledge