Showing 1 - 4 results of 4 for search 'Sweetman, Harvey .L', query time: 0.01s Refine Results
  1. 1
    Principles of biological control /
    by Sweetman, Harvey L.
    Published 1963
  2. 2
    Biological control of insects
    Printed Book
  3. 3
    Principles of biological Control :in relation of hosts and pests and utilisation in regulation of animal and plant populations
    Printed Book
  4. 4
    Principles of biological control:
    by Sweetman, Harvey L
    Published 1958
    Printed Book
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