Updated: Jan 16/18
Canada Constant Precancel Varieties (Hans Reiche, 1989, Stapled, 47 pages)
Canada Precancel Handbook (H.G. Walburn, 1988, Perfect bound, 183 pages)
The Standard Canada Precancel Catalogue, 7th Edition (D. Marasco and B. Field, 2015, Spiral bound, 108 pages)
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