MANICKAVASAGAR, Ponniah
A National study on the marketing distribution and use of agro pesticides in Sri Lanka / [by] Ponniah Manickavasagar - Peradeniya Department of Agriculture 1979 - varied pages
112154
632.95 / MAN
A National study on the marketing distribution and use of agro pesticides in Sri Lanka / [by] Ponniah Manickavasagar - Peradeniya Department of Agriculture 1979 - varied pages
112154
632.95 / MAN