TY - BOOK AU - Miller,Alan R. AU - Miller,Alan R. TI - The ABC’s of DOS 4 SN - 8170290872 U1 - 005.4/469 19 PY - 1989/// CY - San Francisco PB - Sybex KW - PC DOS (Computer file) KW - IBM Personal Computer KW - Programming N1 - Includes index; Text and ill. on inside covers ER -