TY - BOOK AU - Gurgel,Ruth,1944- TI - Learning to use WordPerfect 5.0 & 5.1, Lotus 1-2-3,. Version 2.2, and dBase III Plus PY - 1990/// CY - Boston PB - Boyd & Fraser KW - Computer software KW - WordPerfect (Computer program) KW - Lotus 1-2-3 (Computer program) KW - dBase III Plus (Computer program) ER -