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Author: | Year: | Title: | Content: |
Olkowski, W.; Daar, S.; Olkowski, H. | 1995 | The gardener?s guide to common- sense pest control. | The Taunton Press. USA. |
FADINAP. | 2000 | Integrated plant nutrition systems. | Training Manual. FADINAP/ PRUDD/RDS. http://www.fadinap.org/ipns/srilanka/ipnsmanual/toc.htm |
Rehm, S.; Espig, G. | 2000 | The cultivated plants of the tropics and the subtropics. | Verlag Josef Margraf Scientific Books. Berlin. |
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