Page 15 - Gas Adsorption Equilibria

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Cordial thanks are also given to our colleague and friend Prof. h. c. Erich
Robens, Friedrichsdorf and Mainz, for fruitful and interesting discussions
over many years on the porosity of solids and also for valuable hints to
experimental measurement procedures.

Several people have contributed to realize this monography by processing
the manuscript: Mrs U. Schilk did the excellent typing and formatting of the
text with never ending patience and Mr M. U. Göbel did the art work,
contributing also many ideas to Figures and Diagrams. Both of them are given
our sincere thanks for devotion and dedication to this work.

Last not least we would like to express our gratitude to the Publishers,
especially to Mrs C. Day and Mrs D. Doherty for providing useful
information in layout and styling of the manuscript and for several
encouraging e-mails and notes.

Siegen - Weidenau Leipzig

J. U. Keller R. Staudt