"CHAIRMAN G. A. T. E., . (1991). G A T E - 91 (MODEL QUESTION BOOK). : INDIAN INSTITUTE OF SCIENCE.
"CHAIRMAN G A T E", . 1991. G A T E - 91 (MODEL QUESTION BOOK). : INDIAN INSTITUTE OF SCIENCE.
"CHAIRMAN G A T E", . G A T E - 91 (MODEL QUESTION BOOK). : INDIAN INSTITUTE OF SCIENCE. 1991.