Fertilizers and their use , a pocket guide for extension officers
Food and agriiculture orginization
Fertilizers and their use , a pocket guide for extension officers - 2nd ed. - Rome Food and Agriculture Orginization of the United Nations 1970 - x,54p.; 18cm.
[reprinted 1971]
581.5 / FAO
Fertilizers and their use , a pocket guide for extension officers - 2nd ed. - Rome Food and Agriculture Orginization of the United Nations 1970 - x,54p.; 18cm.
[reprinted 1971]
581.5 / FAO