The question of how many people is too many at a recreation site is becoming increasingly urgent as more resource use produces more problems of crowding and overuse. This book applies research to management by using hard data to solve real problems.
ThriftBooks sells millions of used books at the lowest
everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We
deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15.
ThriftBooks.com. Read more. Spend less.