Journal: | Comercio exterior |
Database: | CLASE |
System number: | 000083090 |
ISSN: | 0185-0601 |
Authors: | Johnson, B |
Year: | 1979 |
Season: | Mar |
Volumen: | 29 |
Number: | 3 |
Pages: | 314-316 |
Country: | México |
Disciplines: | Biología |
Keyword: | Ecología, Biósfera, Protección |
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