TY - RPRT TI - Cyst acquisition rate for Giardia lamblia in backcountry travelers to Desolation Wilderness, Lake Tahoe AU - S.C. Zell AU - S. K. Sorenson PY - 1993 DO - 10.1580/0953-9859-4.2.147 UR - https://pubs.usgs.gov/publication/70111405 ID - 70111405 ER -