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On the Hymenoptera of the Albany Museum, Grahamstown, South Africa
Vol 1, Page 161, Date 1904
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On the Hymenoptera of the Albany Museum, Grahamstown, South Africa. (Second paper)
Vol 1, Page 185, Date 1905
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On the Hymenoptera of the Albany Museum, Grahamstown, South Africa
Vol 1, Page 297, Date 1905