Shudras in Ancient India: A Social History of the Lower Order down to circa A.D. 600 c17.s8.t2.24

Śūdras in Ancient India: A Social History of the Lower Order down to circa A.D. 600 c17.s8.t2.24

R. S. Sharma, "Decay of Gangetic Towns in Gupta Times.", *Journal of Indian history*, Golden Jubilee Volume, 1973, 135-50.