Geology

Bibliografía de Galápagos 1535-1995

1996 Snell, Heidi M. | Snell, Howard L. | Davis-Merlen, Gayle | Simkin, Tom | Silberglied, Robert E. |

Earth heritage conservation

1994 Doyle, Peter | Easterbrook, Glynda | Reid, Elspeth | Wilson, Chris |

Természetvédelmi célú geológiai tanulmány a váci Naszály-Hegyröl

1992 Pataki, Zsolt |

Nacionalni park " Plitvice " - Plitvicka Jezera generalni uredjajni plan

1971

Historia, ecología y vegetación

1992 van der Hammen, T. |

Preliminary reports of expeditions to the Auckland Islands nature reserve 1973-1984

1986 Penniket, A. | Garrick, A. | Breese, E. |

François Matthes and the marks of time : Yosemite and the high sierra

1962 Fryxell, Fritiof |

The Earth

1963 Beiser, Arthur |

First conference on scientific research in the national parks : abstracts

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