| 000 | 00404 a2200133 4500 | ||
|---|---|---|---|
| 080 |
_a575.3/7 _bS 989 S |
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| 245 | 1 |
_aSpecies porblem _bProceedings _cedited by E. Mayer |
|
| 260 |
_aWashington _bAmerican Association for the Advancement of Science _c1957 |
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| 650 | _aSpecies | ||
| 440 |
_aNo. 50 _vAmerican association for the advancement of sceince |
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| 100 |
_a _d |
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| 300 | _a395 p. | ||
| 901 | _a180908 | ||
| 999 |
_c71879 _d71879 |
||