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101 0 $aeng
200 1 $aBiological control by augmentation of natural enemies$einsect and mite control with parasites and predators$eproceedings of a symposium held at the fifteenth international congress of entomology, Washington, 19-22 August 1976$fed. by R. L. Ridgway and S. B. Vinson
210   $aNew York$cPlenum Press$d1977
215   $a480 p.$d6 cm
225 1 $aEnvironmental science research$v11
610 0 $aLotta Biologica e Integrata
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702  1$aRidgway,$bRichard L.
702  1$aVinson,$bS. Bradleigh
710 12$aInternational congress of entomology$d<15. ;$f1976 ;$eWashington>$0314743
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