TY - BOOK ID - 130231650 TI - Research methods in social relations AU - Selltiz, Claire AU - Wrightsman, Lawrence S. AU - Cook, Stuart W. AU - ... [et al.] PY - 1976 PB - New York (N.Y.) Holt-Saunders DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:130231650 AB - ER -