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| Department of Agriculture, Prince Edward Island Canada. | Cole crops production guide. | http:/ / www.gov.pe.ca/ agriculture/ index.php3?number=69765&lang=E |
| Department of Agriculture, Prince Edward Island Canada. | Tomato production guide. | http:/ / www.gov.pe.ca/ agriculture/ index.php3?number=69769&lang=E |
| Department of Agriculture, Prince Edward Island Canada. | Pumpkins and squash production guide. | http:/ / www.gov.pe.ca/ agriculture/ index.php3?number=69768&lang=E |
| Department of Agriculture, Prince Edward Island Canada | Carrot production guide. | http:/ / www.gov.pe.ca/ agriculture/ index.php3?number=69747&lang=E |
| CGIAR. | Tropical whitefly IPM project. | http:/ / www.tropicalwhiteflyipmproject.cgiar.org/ index.jsp |
| Bessin, R. | Tomato IPM guidelines. | http:/ / www.uky.edu/ Agriculture/ Entomology/ entfacts/ veg/ ef313.htm |
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