Ecologic-economic analysis for regional development. Some initial explorations with particular reference to recreational resource use... / W. Isard, Ch. l. Choguill, J. Kissin . - New York : The Free Press, 1972. - 270 с.. - Б. ц. ------------ Дод. точки доступу: Isard, W.; Choguill, Ch. l.; Kissin , J.