RT Book, Whole DB /z-wcorg/ DS http://worldcat.org ID 774574 LA English T1 Plant analysis for nutrient assay of natural waters, A1 Gerloff, Gerald C. A1 Glass, Gary E. A1 United States. Environmental Protection Agency. Office of Research and Monitoring. PB For sale by the Supt. of Docs., United States Govt. Print. Off. PP Washington YR 1973