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Crabb, Riley H. & Thompson, Thomas Maxwell: Implosion. Viktor Schauberger and the path of natural energy.

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1985, Borderland Sciences Research Foundation, Vista, California. 
Includes material by Leopold Brandstätter, Riley Crabb, Albert Zock and Ellen V. Wilmont Ware. 
Type 1: Booklet, stapled, 8½x11, 64 pages. 

Type 2: Later printing also includes Appendix by Helmut Hoffman, translated by Callum Coats. 
Ringbound, 8½x11, 70 pages.