TY - BOOK ID - 127254133 TI - Research methods in social relations AU - Selltiz, Claire AU - Wrightsman, Lawrence Samuel AU - Cook, Stuart W. PY - 1976 PB - New York, N.Y.: Holt, Rinehart and Winston, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:127254133 AB - ER -