TY - RPRT TI - Evaluation of an integrated multi-media learning system. AU - J Dahmer AU - B Pietzka AU - R Walther PY - 1976 DO - 10.1111/j.1365-2923.1976.tb00479.x UR - https://pubmed.ncbi.nlm.nih.gov/63899/ ID - 63899 ER -