UNESCO

World Heritage : twenty years later

1992 Sawyer, Jacqueline | Thorsell, J. W. |

Handbook for mangrove area management

1984

1985 United Nations list of national parks and protected areas

1985

Vingt-huitième réunion de la Commission des parcs nationaux et des aires protégées, Parc national du "W", Niger, 18-22 mars 1987 : compte rendu

1987 Cloutier, Antoine | Dufresne, Alain | Thorsell, J. W. |

Plant genetic resources : their conservation in situ for human use

1989

The botanic gardens conservation strategy

1989 Heywood, Vernon |

The World Heritage Convention in the Australian-Pacific region : proceedings of a workshop session on critical issues for protected areas held during the 18th session of the General Assembly of IUCN, Perth, Australia, 1 December 1990

1991
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