TY - BOOK TI - Learning environments : contributions from Dutch and German research AU - Pieters, J. M., 1947-. AU - Breuer, K. AU - Simons, P. R. J. SN - 3540529039 (Berlin : alk. paper) PB - Springer-Verlag PP - Berlin ; New York : Springer-Verlag, c1990. PY - 1990 UR - https://library.korea.ac.kr/detail/?cid=CAT000045842776&ctype=m