Hollyday, E. F., & McKenzie, S. W. (1973). Hydrogeology of the formation and neutralization of acid waters draining from underground coal mines of western Maryland. Dept. of Natural Resources, Maryland Geological Survey.
Chicago Style (17th ed.) CitationHollyday, E. F., and Stuart W. McKenzie. Hydrogeology of the Formation and Neutralization of Acid Waters Draining from Underground Coal Mines of Western Maryland. [Baltimore]: Dept. of Natural Resources, Maryland Geological Survey, 1973.
MLA (9th ed.) CitationHollyday, E. F., and Stuart W. McKenzie. Hydrogeology of the Formation and Neutralization of Acid Waters Draining from Underground Coal Mines of Western Maryland. Dept. of Natural Resources, Maryland Geological Survey, 1973.
Warning: These citations may not always be 100% accurate.