Tennakoon, N.A.Liyanage, M.de.S.2014-06-032014-06-031997Coconut Bulletin , 10(1/2):p.24-25https://dl-cri.nsf.gov.lk//handle/1/3623FertilizersOrganic fertilizersMicro nutrientsOrganic manures: A source of micronutrients