The Delaware Valley environment: status and prospects
Subtitle: a source book for Earth Week developed from the technical symposium held in Philadelphia, April 4-10, 1970.
Contributors: Earth Week Committee.; University City Science Institute.; Chamber of Commerce of Greater Philadelphia.
Published: 1970
Place of publication: [n.p
Language: eng
Subjects: Pollution -- Delaware River Valley (N.Y.-Del. and N.J.) -- Congresses.
Notes: Includes bibliographical references.
Sponsored by Earth Week Committee, the University City Science Institute, and the Greater Philadelphia Chamber of Commerce.