Singh, Chhidda Modern techniques of raising field crops / Chhidda Singh. - New Delhi : Oxford and I.B. H. Publishing, c1983 - viii, 523p. ; 25x16cm. ISBN: 81-204-0135-2 : Rs. 150 Subjects--Topical Terms: FIELD CROPS Dewey Class. No.: 633 / SIN-MOD