Intensive Agriculture. v.10, 1972-73
Verma, Ravi, ed.
Intensive Agriculture. v.10, 1972-73 edited by Ravi Verma - New Delhi Directorate of Extension 1972 - v.10, varies p.; 28cm.
Intensive Agriculture. v.10, 1972-73 edited by Ravi Verma - New Delhi Directorate of Extension 1972 - v.10, varies p.; 28cm.
