Blecher F.N. Didactic games and didactic materials. In Russian /Blekher F.N. Didakticheskie igry i didakticheskie materialy. M. Uchpedgiz 1948. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalbc4c4e2e7445b8aaa.