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  1. Biological Control 2 (1986 Video)

    Producer
    Mike Gunton
    Subject
    Biology; Environmental science
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 25 min.

    Biological control can be one of the most effective of all methods of pest control - self-regulating, safe and very cost-effective - but it has a limited success rate. There is interest in improving the...

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  2. Enemies of the Oak (1986 Film)

    Subject
    Biology
    Distribution
    Film (16mm)

    A year in the life of a 300-year-old oak. Begins in October when the wingless female winter moth climbs the oak to mate and lay her eggs. During late April the buds on the oak open and the catkins are ready...

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