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no. 2
Molluscs : prosobranch and pyramidellid gastropods : keys and notes for the identification of the species / Alastair Graham
pbk.. - 2nd ed. - Leiden ; New York : Published for the Linnean Society of London and the Estuarine and Brackish-water Sciences Association by E.J. Brill/Dr. W. Backhuys , 1988
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2 |
no. 8
Molluscs : benthic opisthobranchs : Mollusca, Gastropoda : keys and notes for the identification of the species / T.E. Thompson
2nd ed. - Leiden ; New York : Published for the Linnean Society of London and the Estuarine & Brackish-water Sciences Association by E.J. Brill/W. Backhuys , 1988
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3 |
. new series ; no. 21
British and other marine and estuarine oligochaetes : keys and notes for the identification of the species / R.O. Brinkhurst
pbk.. - Cambridge [Cambridgeshire] ; New York : Published for the Linnean Society of London and the Estuarine and Brackish-water Sciences Association by Cambridge University Press , 1982
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