TY - BOOK AU - Harder,Theodor TI - Introduction to mathematical models in market and opinion research: with practical applications, computing procedures and estimates of computing requirements U1 - 658.80018 PY - 1969/// CY - Dordrecht PB - Reidel KW - MARKETING KW - MODELOS MATEMATICOS KW - OPINION PUBLICA N1 - TĂ­tulo original: Elementare mathematische modelle in der market-und meinungsforschung; BibliografĂ­a: p. 193-194; Introduction -- 1. Adversiting media calculations -- 2. Elementary forecasting calculations -- 3. Factor analysis -- 4. Market models ER -