13 1 10 Beltsville symposia in agricultural research 2 Romberger, John A. Additional Author mixed material 0470264160 Montclair Allanheld, Osmun & Co. Publishers. Inc. 1978 NULL Bindra, O. S. Additional Author Singh, Harcharan Additional Author mixed material New Delhi Oxford & IBH Publishing Co. 1977 NULL Phipps, Lloyd G. Additional Author mixed material 0813420949 Danville The Interstate 1980 NULL principles and perspectives Epstein, Emanuel Additional Author mixed material 0471243418 New York John Wiley & sons 1972 NULL with special reference to crops of India Poehlman, John Milton Additional Author Borthakur, Dhirendranath Additional Author mixed material New Delhi Oxford & IBH Publishing Co. 1969 NULL Nurul Islam Additional Author mixed material 333166442 London Macmillan 1974 NULL Fischer, William C. Additional Author Hardy, Charles E. Additional Author mixed material Missoula U.S. Department of Agriculture 1976 NULL International Rice Research Institute Additional Author mixed material 971104126x Manila International Rice Research Institute 1985 NULL Pinstrup-Andersen, Per Additional Author mixed material 0582460484 London Longman 1982 NULL a comparative study of agricultural education systems Axinn, George H. Additional Author Thorat, Sudhakar Additional Author mixed material New Delhi Oxford & IBH Publishing 1972 NULL