Mastering 1-2-3 Mastering 123 Jorgensen creator text Berkeley SYBEX c1986 monographic eng xxiii, 466 p. ill. (some col.) 23 cm. Carolyn Jorgensen. One folded col. chart inserted. On t.p. the registered trademark symbol "TM" is superscript following "3" in the title. Includes index. Lotus 1-2-3 (Computer file) Business Computer programs Electronic spreadsheets 0895883376 (pbk.) : mod 20111010090000.0 0000129305