Manickavasagar, P.
A National study on the marketiong distribution and use of agro-pesticides in Srilanka /by Ponniah Manickavasagar - [Sri Lanka] Department of Agriculture 1979 - 75 pages
632.95 / MAN
A National study on the marketiong distribution and use of agro-pesticides in Srilanka /by Ponniah Manickavasagar - [Sri Lanka] Department of Agriculture 1979 - 75 pages
632.95 / MAN