TY - RPRT TI - The enormous Chillos Valley Lahar: An ash-flow-generated debris flow from Cotopaxi Volcano, Ecuador AU - P.A. Mothes AU - M.L. Hall AU - R. J. Janda PY - 1998 DO - 10.1007/s004450050188 UR - https://pubs.usgs.gov/publication/70020703 ID - 70020703 ER -