Filter
Sökt på: Böcker av Ronald W. Doerfler
Filter
totalt 2 träffar
Dead Reckoning
pocket,
1993,
Engelska,
ISBN 9780884150879
Dead Reckoning
E-bok,
1993,
Engelska,
ISBN 9781589796737
No author has gone as far as Doerfler in covering methods of mental calculation beyond simple arithmetic. Even if you have no interest in competing with computers you'll learn a …