by Yusnier Viera (Author)
The author, Yusnier Viera, has several World Records in Mental Calculation and has appeared on prestigious television channels such as CNN, Discovery Channel, NatGeo, Fox, as well as the Ellen DeGeneres show. Viera is willing to teach all his secrets to calculate mentally.
Number of Pages: 50
Dimensions: 0.13 x 11 x 8.5 IN
Publication Date: May 19, 2012