ParlInfo - Aggregate and the environment [electronic resource] / William H. Langer, Lawrence J. Drew, Janet S. Sachs ; with a foreword by Travis L. Hudson and Philip E. LaMoreaux.
Aggregate and the environment [electronic resource] / William H. Langer, Lawrence J. Drew, Janet S. Sachs ; with a foreword by Travis L. Hudson and Philip E. LaMoreaux.
Alexandria, Va. : American Geoological Institute in cooperation with U.S. Geological Survey, c2004.
Quarries and quarrying -- Environmental aspects.
Aggregates (Building materials) -- Environmental aspects.