Vigyanik:Ek Samaj Shastriya Adhyayan.
Trivedi,Harishankar.
Vigyanik:Ek Samaj Shastriya Adhyayan. - New Delhi Mittal Publication 1991 - 190
Samaj Shastriya Adhyayan
301.072
Vigyanik:Ek Samaj Shastriya Adhyayan. - New Delhi Mittal Publication 1991 - 190
Samaj Shastriya Adhyayan
301.072