Some texts referred to in Chapter 5 are not available from this
website. Please download them from the "official" website of the
New Manual of Seismological Observatory Practice:

http://www.gfz-potsdam.de/portal/cms/Bibliothek/Publizieren/C-Verlag/zu+Vetrieb/New+Manual+of+Seismological+Observatory+Practice+NMSOP

The latest versions of my own texts will however always be on
the website www.software-for-seismometry.de .

June 2010       Erhard Wielandt