Fertilizer guide for the tropics and subtropics
de Geus, J. G
Fertilizer guide for the tropics and subtropics - 2d ed. - Zurich Centre d'etude de l'azote 1973 - 774 p.: graphs., 40
631.8(213 / D317F
Fertilizer guide for the tropics and subtropics - 2d ed. - Zurich Centre d'etude de l'azote 1973 - 774 p.: graphs., 40
631.8(213 / D317F