TY - RPRT TI - Biodegradable ceramic in periodontal defects. AU - M P Levin AU - L Getter AU - D E Cutright AU - S N Bhaskar PY - 1974 DO - 10.1016/0030-4220(74)90359-4 UR - https://pubmed.ncbi.nlm.nih.gov/4528447/ ID - 4528447 ER -