TY - GEN AU - ZALTER,R AU - LUISADA,A A TI - Phonocardiography. II. Appraisal and critical analysis of existing systems SN - 0002-9149 PY - 2000///0701 KW - Heart Murmurs KW - Heart Sounds KW - Humans KW - Phonocardiography N1 - Publication Type: Journal Article UR - https://doi.org/10.1016/0002-9149(59)90189-4 ER -