na INLIS000000000002780 Ind 0010-1118002780 Effect of organic manure on crop yield in long-term field experiments WADMAN, W.P. W.P. Wadman Br.631.86WADe In: J.H. Cooley (ed), Soil organic matter dynamic and soil productivity: proc intend workshop, ekenaes, Sweden, 4-6 June 1986 Intern. Assoc. for ecology Athens... Intecol Bulletin 1987: 15 pp.83-89. 631.86 ORGANIC FERTILIZERS YIELDS EXPERIMENTS 1326/MS/88