IBM PC Assembly Language a Guide for Programmers by Leo J. Scanlon 1983 SC

IBM PC assembly language: A guide for programmers by Leo J Scanlon

6502 Software Design Paperback Vintage 1980 Leo J. Scanlon

1983 IBM PC & XT Assembly Language Book

6502 Software Design/ Paperback/ Vintage 1980/ Leo J. Scanlon

The Peter Norton Programmer's Guide to the IBM PC : The Ultimate

Assembly Language Subroutines for MS-DOS Computers by Leo J. Scanlon, 2nd ed.

IBM PC Assembly Language and Programming Hardcover Peter Abel 1998 Book