TY - GEN AU - Sharma,T.C. TI - Teachnological change in Indian agriculture : : a regional perspective SN - 8170335392 U1 - 631.58 PY - 1999/// CY - Jaipur ; New Delhi : PB - Rawat Publications, KW - Physical endowments of study area KW - Trends in crop production KW - Development of irrigation KW - Conceptual basis of the study ER -