na INLIS000000000004389 Ind 0010-1118004389 Potential crop production prediction by some simple calculation methods, as compared with computer simulations VERSTEEG, M.N. M.N. Versteeg; H. van Keulen Wageningen Centre for Agrobiological Research 1986 24 p.: ill.; 24 cm.-- 24 p.: ill.; 24 cm.-- 633-155 CROPS PRODUCTION CONTROLS COMPUTER APPLICATIONS SIMULATION METHODS mfn-6133