The histology of the alimentary canal and associated structures of Metopolophium dirhodum (Homoptera: Aphididae) by Campbell, M. B. S. C. (Mark Bryer St Clair)

Other Authors: “…Durr, H. J. R.…”
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A study of Sminthurus viridis (L.) (Collembola) in the Western Cape Province by Walters, Michael Charles

Other Authors: “…Dürr, H.J. R.…”
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