Determination of angiosperm families by means of a punched-card system
By Bertel Hansen and Knud Rahn
Bok Engelsk 1969
| Utgitt | København : Dansk Botanisk Forening , 1969
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|---|---|
| Omfang | 45 p. : illus.
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| Opplysninger | Issued in case, with 172 punched cards.
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| Emner |
