Plant Protection Bulletin. v.17, 1965
Verma, B.K., ed.
Plant Protection Bulletin. v.17, 1965 edited by B.K. Verma - Delhi Directorate of Plant Protection 1965 - v.17, 43 p.; 24cm.
Plant Protection Bulletin. v.17, 1965 edited by B.K. Verma - Delhi Directorate of Plant Protection 1965 - v.17, 43 p.; 24cm.