TY - BOOK ID - 145974921 TI - Report on the agro-ecological zones project AU - Kassam, A. H. AU - Kowal, J. M. AU - Sarraf, S. PY - 1981 SN - 9251011729 9789251010815 9789251010099 9251010811 9789251006948 9251010099 9789251011720 9251006946 PB - Rome: FAO, DB - UniCat KW - Agricultural ecology UR - https://www.unicat.be/uniCat?func=search&query=sysid:145974921 AB - ER -