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Helen E Roy
Helen E Roy is the author of "Ladybirds", "From Biological Control to Invasion: the Ladybird Harmonia Axyridis As a Model Species", "The Ecology of Fungal Entomopathogens" and "From Biological Control to Invasion".
Books by Helen E Roy
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Ladybirds
Roy, Helen E.
Electronic book text:
$28.99
From Biological C...
Roy Helen E.
Paperback:
$169.99
Ladybirds
Roy, Helen E.
Paperback:
$32.00
The Ecology of Fu...
Roy Helen E.
Paperback:
$199.99