 | Beetle, Alan A. (Alan Ackerman), 1913- cn | (2) |
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 | Beetle, Alan A. (Alan Ackerman), 1913- cn; Grasses of Wyoming / Alan A. Beetle and Morton May. Laramie : Agricultural Experiment Station, University of Wyoming, 1971. | |
| Beetle, Alan A. (Alan Ackerman), 1913- cn; Recommended plant names / Alan A. Beetle. Laramie, Agricultural Experiment Station, University of Wyoming, 1970. | |
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