Plant diseases
Singh, R.S.
Plant diseases by R.S. Singh - 4th edn. - New Delhi Oxford and IBH Publishing 1978 - 564 p.
Plant Diseases
632 / S 617 P
Plant diseases by R.S. Singh - 4th edn. - New Delhi Oxford and IBH Publishing 1978 - 564 p.
Plant Diseases
632 / S 617 P