Monitoring soils in agroforestry: chemical properties

by 79380 Huxley, P.A., 39486 (eds.), 82167 KAMPRATH, E.J., 95255 Mongi, H.O., 9447 ICRAF, Nairobi (Kenia), 35346 Expert Consultation on Soils Research in Agroforestry, Nairobi (Kenia), 26-30 Mar 1979