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Light Beings: Master Essences

by Petra Schneider, Gerhard Pieroth

ISBN 13: 9780910261180

Format: Paperback (272 pages)
Publisher: Lotus Press
Published: 30 Sep 1998

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Quality Assurance for Chemistry and Environmental Science: Metrology from pH Measurement to Nuclear Waste Disposal

by Günther Meinrath,Petra Schneider

ISBN 13: 9783540712718

Format: Hardcover (326 pages)
Publisher: Springer
Published: 27 Sep 2007

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