Sukumaran, N. (1971). Prathamika Krishi tatwangal. Kerala Bhasha Insititute.
Chicago Edition CitationSukumaran, N. Prathamika Krishi Tatwangal. Trivandrum: Kerala Bhasha Insititute, 1971.
MLA Edition CitationSukumaran, N. Prathamika Krishi Tatwangal. Kerala Bhasha Insititute, 1971.
Warning: These citations may not always be 100% accurate.