Wachtel G.D. Technical Analysis Manual. In Russian (ask us if in doubt)./Vakhtel' G.D. Rukovodstvo k tekhnicheskomu analizu. Edited by N.I. Tavildarov, professor at the St. Petersburg Institute of Technology. With 37 drawings in the text. Saint Petersburg Edition by L.F. Panteleev, 1887. 580 p. SKUalbd171a8b08aa6abc8.