Handbook on phosphate fertilisation.

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi rangatōpū: International Superphosphate and Compound Manufacturers' Association
Hōputu: Pukapuka
I whakaputaina: [Paris : ISMA Ltd., 1978?]
Ngā marau:
Phosphatic fertilizers.
Soils > Phosphorus content.
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