00504cam a22001571 4500 631.8 IGN L-32, P-52 Ignatieff, Vladimir, 44575 Efficient use of fertilizers. Washington, Food and Agriculture Organization of the United Nations, 1949. x, 182 p. illus., maps. 23 cm. FAO agricultural studies, 0 0 0 631_800000000000000_IGN Fertilizers. 44576 MCE 379 ddc BK 548330 548330 0 0 ddc 0 0 MCE MCE 2014-08-27 0 631.8 IGN MCE-2398 2014-08-27 2014-08-27 BK