This is a pristine, vintage copy of Sperry Personal Computer System Programming in BASIC for DOS 2.11. Copyright is 1979, Microsoft Corporation, and 1984 Sperry Corporation. This volume has been stored in a smoke-free environment for the past 40 years at least and is in practically unused condition. Here are some details.
The sleeve and interior binder are both in excellent condition. There are only very slight marks on the spine and inside front cover of the binder to indicate shelf wear. See photos for more details.
The first paragraph of the Preface reads as follows:
This book is a guide for programming in the BASIC language provided with the SPERRY Personal Computer System. This manual provides overview of BASIC for DOS 2.11 and serves as a reference to the BASIC commands and functions.Edition: 3rdPage count: ca. 400 pagesBinding: 3 ring binder with sleeveTrim size: 8 x 9Publication Date: 1984