Effect of cutting edge thickness and state of wear of ploughshare on draught force and heart rates of Sanga oxen in Ghana
| Autor: | Bobobee, Emmanuel Y.H., Gebresenbet, Girma |
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| Zdroj: | In Soil & Tillage Research 2007 95(1):298-307 |
| Databáze: | ScienceDirect |
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