Jorgensen Carolyn Mastering 1-2-3 Jorgensen Carolyn - Delhi BPB Publishing India 1986 - xxiii,466p cm. Appendix P 419-56 ISBN: 90.00 Source: 70, 21/09/1987, Upadhay General Book Subjects--Topical Terms: Computer Science Dewey Class. No.: D6,9(B), M6