1.
A Colour Handbook of Biological Control in Plant Protection
by Helyer, Neil, Brown, Kevin,...
ISBN: 9781840761177
List Price: $32.00
2.
Biological Control in Plant Protection (Colour Handbook)
by Neil Helyer
ISBN: 9781840766011
List Price: $80.75
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Color Handbook of Biological Control in Plant Protection
by Helyer, Neil, Brown, Kevin,...
ISBN: 9780881925999
List Price: $39.95