TY - RPRT TI - Final report on the investigation of water purification and waste concentration by the vacuum freezing multiple phase transformation process and its eutectic extension: September 1986 to September 1987 AU - C.Y. Cheng AU - Calyxes Research and Development Corporation AU - Wu-Ching Cheng PY - 1987 DO - 10.3133/25220 UR - https://pubs.usgs.gov/publication/25220 ID - 25220 ER -