Patterson, Carol. The business of ecotourism : The complete guide for nature and culture-based tourism operators / Carol Patterson; Forward by Delia and Mark Owens. - third edition. - xii, 218 pages ; 27 cm. Includes index. ISBN: 1425117244 Subjects--Topical Terms: Ecotourism--Handbooks, manuals etcTourism--Handbooks, manuals etcTourism--Environmental aspects