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Nutrient balances and the need for fertilizers in semi-arid and arid regions : proceedings of the 17th Colloquium of the International Potash Institute held in Rabat and Marrakech, Morocco.
I tiakina i:
| Kaituhi rangatōpū: | |
|---|---|
| Hōputu: | Conference Proceeding Pukapuka |
| I whakaputaina: |
Bern :
The Institute,
1983.
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| Ngā marau: | |
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