Assertion: wetland's value | /r/HasProperty | shaw
Facets:
Source sentences:
text: An inventory in the conterminous United States during the early 1950's showed that of 74.4 million acres of wetlands, 8.8 million acres had a high value for waterfowl, 13.6 million acres were of moderate value, 24.1 million acres were of low value, and 27.9 million acres were of negligible value (Shaw and Fredine, 1956, p. 17).