Zillesen,P.G. V. Methods and techniques for the design of educational computer simulation programs and their validation by means of empirical research/ P.G. Van Schaick Zillesen - Meppel: Krips Repro, 1990 - 25 p.: ill.; 24 cm. includes Appendix and bibliographical reference ISBN: 9090038744 Subjects--Topical Terms: Educational computer LC Class. No.: DUCE LB1029.Z53