LIBROS DEL AUTOR: r ridgway

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  • Biological Control by Augmentation of Natural Enemies
    R. Ridgway
    The protection of agricultural crops, forest, and man and his domestic animals from annoyance and damage by various kinds of pests remains a chronic problem. As we endeavor to improve pro­ duction processes and to develop more effective and acceptable tactics for achieving this protection, we must give high priority to all potentially useful technique...
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    131,73 €