Описание: Protecting visibility in national parks and wilderness areas

Електронен

Автор-организации:	ebrary, Inc.
Формат:	Електронен
Език:	English
Публикувано:	Washington, D.C. : National Academy Press, 1993.
Предмети:	Haze > Environmental aspects > United States. Visibility > United States. Air quality management > United States. National parks and reserves > United States. Wilderness areas > United States. Electronic books.
Онлайн достъп:	An electronic book accessible through the World Wide Web; click to view

Физически характеристики:	xv, 446 p. : ill., maps.
Библиография:	Includes bibliographical references (p. 265-313).