Project of a new system of arithmetic, weight, measure and coins, proposed to be called the tonal system, with sixteen to the base
Автор: Nystrom, John W. (John William), 1824-1885, 125 стр., издатель: "Книга по Требованию", ISBN: 978-5-8832-8250-7



5 из 5, 6 голос(-ов).