| Entry | Volume | Pages |
|---|---|---|
| Speirs, D.C.: Arctic and Alpine Ecology | 47 | 31 |
| Speirs, D.C.: Some Unusual Alpines, 1. The Hawaiian Silversword | 53 | 218 |
| Speirs, D.C.: Some Unusual Alpines, 2. The Giant Senecios of Eastern Africa | 53 | 402 |
| Speirs, D.C.: The Genus Sedum in Alberta | 46 | 263 |
| Speirs, D.C.: The Genus Townsendia in Western Canada | 46 | 167 |
| Speirs, D.C.: When the Ice Came By | 48 | 53 |
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