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  1. Blelham Tubes (1984 Video)

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

    Using giant plastic tubes, the Freshwater Biological Association created model lakes within a natural lake, Blelham Tarn, and they began an investigation into the primary production of freshwater algae that...

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