'N stikstofprobleem by wintergraanverbouing onder besproeiing in die gemengde karoo met spesial verysing na gronbelugting en nitraatuitloging /
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| OCLC: | 50396179 |
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| Language: | Afrikaans |
| Published: |
1959.
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| Format: | Thesis Monograph Note that CRL will digitize material from the collection when copyright allows. |