"Included with this book is a set of discs which comprise the "distance learning package". The programme runs on IBM/IBM compatible systems and two sizes of discs are included ... one 3.5" disc labelled EC 1 & 2 containing the complete distance learning package & two 5.25" discs ... labelled EC 1 & EC2 respectively and containing those elements of the package making up part 1 and part 2" -- p. vii
Title on disk "Butterworths guide to the E. C. Tutor programme"
System requirements for disks: IBM PC or compatible