A monograph of the Western Hemisphere bumblebees (Hymenoptera: Apidae; Bombinae) /
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| Format: | Book |
| Language: | English |
| Published: |
Ottawa :
Entomological Society of Canada,
1970-
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| Series: | Memoirs of the Entomological Society of Canada ;
no. 65, 89. Memoirs of the Entomological Society of Canada ; no. 65, 82, 89, 91. |
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| Physical Description: | volumes ; 26 cm. |
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