TY - GEN AU - Schneider,H D TI - [The importance of age-homogenous member's in secondary groups--the example of choirs (author's transl)] SN - 0300-5704 PY - 1979///0626 KW - Adult KW - Age Factors KW - Aged KW - Group Structure KW - Humans KW - Interpersonal Relations KW - Middle Aged KW - Music KW - Personal Satisfaction KW - Switzerland N1 - Publication Type: English Abstract; Journal Article ER -