Cunningham, William P. Principles of environmental science: inquiry & applications/ William P. Cunningham, Mary Ann Cunningham. - 9th ed. - New York: McGraw-Hill Education, c2020. - 402 p.: ill.; 28 cm. Includes index ISBN: 978-1-260-56602-4 Subjects--Topical Terms: Environmental sciences. Dewey Class. No.: GC 363.7 C973 2020