Effect of Chemical Pre-treatment for Identification of Clay Minerals in Four Soil Orders by X-ray Diffraction Technique

Ruma Das, Tapan Jyoti Purakayastha, Debarup Das, Nayan Ahmed, Rahul Kumar, Sohan Singh Walia, Rohitashav Singh, Vishnu Shukla, M. S. Yadava, N. Ravisankar, Sayanti Datta