RT Book T1 How to conduct surveys, follow-up studies, and basic data collection in evaluation studies A1 Roth, Robert A. LA Undetermined PP Washington, DC PB Univ. of America Pr. YR 1981 UL https://krimdok.uni-tuebingen.de/Record/1084034158 CN 379.1/54 K1 Aufsatzsammlung K1 Evaluation : Pädagogik