635.0421ARY 16537 Arya, Prem Singh Vegetable seed production principles / Prem Singh Arya . – Ludhiana : Kalyani, 1999. 309 p. ISBN 8176630624 : Rs. 195.00. Subjects--Topical Terms: FOOD AND NUTRITIONSEED PRODUCTIONVEGETABLES Dewey Class. No.: 635.0421 / ARY