Common weeds of the North-west plains of India
Singh, H.B., Khanna, P.P.
Common weeds of the North-west plains of India - New Delhi 1965 - 48 p. - No. 5; Indian Council of Agriculturalc .
632.5(54)
Common weeds of the North-west plains of India - New Delhi 1965 - 48 p. - No. 5; Indian Council of Agriculturalc .
632.5(54)