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A guide to insect pests in Douglas-fir seed orchards


, : A guide to insect pests in Douglas-fir seed orchards. Information Report, Canadian Forestry Service (BC-X-204): 19

This guide to the recognition, biology and injuriousness of insects that infest Douglas fir (Pseudotsuga menziesii) is intended for seed-orchard workers in western Canada.

US$29.90


Other references

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Bacon, W.; Liu, H., 2003: Influence of photoperiod and age of photostimulation on the incidence of polycystic ovarian follicle syndrome in turkey breeder hens. An arrest in egg laying associated with a polycystic ovarian follicle syndrome (PCOF) has been recently reported early in the egg production period in turkey hens photostimulated at 30 wk of age (WOA) with continuous light. When autopsied 2 to 3 w...

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