TY - RPRT TI - Combined reversible/irreversible hydrocolloid impression systems: comparative analysis. AU - D C Appleby AU - W Smith AU - J F Lontz AU - E B Mingledorff PY - 1985 DO - 10.1016/0022-3913(85)90236-7 UR - https://pubmed.ncbi.nlm.nih.gov/3903131/ ID - 3903131 ER -