TY - RPRT TI - Cost-effective development of a computer-assisted instruction system. AU - R B McGhee AU - W F Bennett AU - C S Morris AU - L S Witanowski PY - 1989 DO - 10.2214/ajr.153.4.877 UR - https://pubmed.ncbi.nlm.nih.gov/2672742/ ID - 2672742 ER -