TY - BOOK AU - Sarowha, Sukh Lal Singh AU - Singh, I.D., ad. TI - Structural investigations of vacuum residues of Indian crude oils U1 - Th-P 665.332 21st ed. KW - Petroleum-India KW - Vacuum technology-India N1 - Thesis (Ph.D)-Forest Research Institute, Dehradun, 1985 ER -