TY - BOOK ID - 137967208 TI - Survey measurements : techniques, data quality and sources of error PY - 2015 SN - 9783593502809 3593502801 PB - Frankfurt New York Campus Verlag DB - UniCat KW - Social surveys KW - Methodology KW - Response rate UR - https://www.unicat.be/uniCat?func=search&query=sysid:137967208 AB - ER -