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  1. 1
    Identification of materials
    by Benedetti-Pichler,A.A
    Published 1964
    Subjects: “...Technique of observation Manipulation...”
    Printed Book
  2. 2
    Patricia L Through the telescope
    by Barnes,svarney
    Published 2000
    Subjects: “...Amateur astronomer Observing comets...”
    Printed Book
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