Plant diseases
Singh, R.S.
Plant diseases by R.S. Singh - 2nd edn. - Calcutta Oxford and IBH Publishing 1968 - 492 p.
Plant Diseases
632 / S 617 P
Plant diseases by R.S. Singh - 2nd edn. - Calcutta Oxford and IBH Publishing 1968 - 492 p.
Plant Diseases
632 / S 617 P