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  1. Light from Semi-Conductors (1986 Video)

    Producer
    Tony Duggan
    Subject
    Physics
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 25 min.

    Concerned with the use of modern semi-conductor devices to produce light for fibre-optic communication systems. Using computer animations, discusses some of the more important properties of light-emitting...

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  2. Artificial Insemination (1996 Video)

    Director
    Patrick C Farr
    Producer
    Patrick C Farr
    Subject
    Veterinary science
    Distribution
    Out of Distribution

    In two parts: 1) shows techniques fo preparation of fresh, chilled and frozen semen and the use of buffers and extenders preventing damage during the cooling process; 2) examines insemination techniques...

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