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American architect

American-Australian zoologist, conservationist and television host

Belarusian artist

American architectural historian

Dutch numismatist

British biologist and species conservator

Cat breeder

American conservationist

American environmental health scientist, explorer, conservationist, author

American botanist

Kenyan zoologist

American historian

Activist for the protection of the social and industrial heritage of Brussels

International conservationist, environmentalist, explorer and author

German conservationist

Italian conservationist

Taiwanese conservationist

Conservation scientist

New Zealand conservationist

British-Australian horticulturalist

Lithuanian-Canadian primatologist conservationist

American writer, humorist, fisherman, environmentalist and conservationist

Botanist and conservationist

German conservator

Swedish writer

American businessman, conservationist, union activist

American conservationist and educator

American art historian and film preservationist

American industrialist and conservationist

Indian conservationist

American conservationist

British author, conservationist and broadcaster

Beaver sanctuary in upstate New York

American conservationist, forester, philanthropist, industrial baron

Norwegian art historian

American nature conservationist, television host and producer

American quilter, quilt historian, collector and philanthropist

South African conservationist