Intensive Agriculture. v.15, 1977-78
Verma, Ravi, ed.
Intensive Agriculture. v.15, 1977-78 edited by Ravi Verma - New Delhi Directorate of Extension 1977 - v.15, varies p.; 27cm.
Intensive Agriculture. v.15, 1977-78 edited by Ravi Verma - New Delhi Directorate of Extension 1977 - v.15, varies p.; 27cm.
