Purchased about 40 years ago when I was playing with MSX-BASIC. It's heavily soiled and stained, so I'm listing it as junk. Would it be suitable as research material? Please check the images for the condition. Comes with a clear book cover. Release Date: April 25, 1984 Editor: Maru-sha Editorial Department Publisher: Masao Yamazaki Published by: Maru-sha Co., Ltd.