Intensive Agriculture. v.11, 1973-74
Verma, Ravi, ed.
Intensive Agriculture. v.11, 1973-74 edited by Ravi Verma - New Delhi Directorate of Extension 1973 - v.11, varies p.; 28cm.
Intensive Agriculture. v.11, 1973-74 edited by Ravi Verma - New Delhi Directorate of Extension 1973 - v.11, varies p.; 28cm.
