TY - RPRT TI - Rapid changes in dissolved humic substances in Spirit Lake and South Fork Castle Lake, Washington AU - Diane M. McKnight AU - K. A. Thorn AU - R.L. Wershaw AU - J.M. Bracewell AU - G.W. Robertson PY - 1988 UR - https://pubs.usgs.gov/publication/70014374 ID - 70014374 ER -