UNESCO

Prospects for New Zealand biosphere reserves

1979 Robertson, B. T. | O'Connor, K. F. | Molloy, B. P. J. |

Coastal and marine environmental problems of Somalia

1987

Guidelines for field studies in environmental perception

1977 Whyte, Anne V. T. |

Conservation and development of tropical forest resources

1982

Debt for nature : tackling debt and degradation

1991

Stratégie pour un développement durable du tourisme au Sahara

2000 Hosni, Ezzedine |

Science for the twenty-first century : a new commitment

2000 Ceto, Ana Maria |
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