Phosphate rock and phosphatic fertilizers in the world : role of international aid.
- Paris : OECD , 1972
- 130p. : ill. ; 25 cm.
- OECD technical papers .
International trade
Fertilizer industry
Foreign assistance
Fertilizers
631.8 / OECD-2
International trade
Fertilizer industry
Foreign assistance
Fertilizers
631.8 / OECD-2