AUTHOR
Facts on File, Inc
2
International Union for Conservation of Nature and Natural Resources
2
Ashworth, G. J. (Gregory John)
1
Corner, John
1
Fowler, Peter J.
1
Getty Conservation Institute
1
Goodland, Robert 1945-
1
Harrison, Richard
1
Harvey, Sylvia
1
Herbert, David T.
1
International Council on Monuments and Sites United States Committee
1
Mac Lean, Margaret G. H.(Margaret Greenup Holmes)
1
Merriman, Nick
1
Prentice, Richard
1
Sembrano, Edgar Allan M.
1
Sykes, Meredith H.
1
Tunbridge, J. E.
1
United States Information Agency
1