S. S. Narwal Allelopathy in Crop Production - Jodhpur Scientific Publishers 1994 - 288p S. S. Narwal: Allelopathy in Crop Production. Jodhpur. Scientific Publishers, 1994. 81-7233-100-1--(581.14NAR) ENGLISH ISBN: 81-7233-100-1 Dewey Class. No.: 581.14 / NAR