These are the Mathematica notebooks and packages used in the book
"Mathematica as a Tool" by Stephan Kaufmann.
Published by Birkhauser Verlag, 1994, ISBN 3-7643-5031-8.

skbook.zip:
DOS/Windows version, extract with "pkunzip -d skbook.zip".

SKBook.tar.Z:
Unix version, extract with "cat SKBook.tar.Z | uncompress | tar xvf -".

SKBook.sit.hxq:
Macintosh version, self-extracting archive.