TY - BOOK AU - Sommer,Robert AU - Sommer,Barbara Baker TI - A practical guide to behavioral research: tools and techniques SN - 0195039777 (alk. paper) U1 - 307.2 PY - 1986/// CY - New York PB - Oxford University Press KW - Social sciences KW - Research KW - Methodology KW - Psychology KW - Data processing ER -