Horizon Computer System Manual (Double Density)

San Leandro, CA: North Star Computers, Inc., 1980. Third edition. Large blue-white octavo, 47 p, with appendixes and b&w plans Faint black mark to front cover, very gentle wear to spine foot and head, barely rubbed edges and corners, few light white marks and small scratches to rear cover, else very good. Paperback.

Computers, Technology. Sans DJ.