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  1. By: Allen, Alfred. - Postal Microscopical Society. - Wesley Naturalists' Society.
    Publication info: [London, W. P. Collins, 1884-
    Holding Institution: MBLWHOI Library
  2. By: Postal Microscopical Society. - Allen, Alfred.
    Publication info: [London, W.P. Collins, 1882-1883]
    Holding Institution: MBLWHOI Library