BOOKS - POPULAR SCIENCE - Быстрый счет
US $9.72
709321
709321
Быстрый счет
Year: 1941
Number of pages: 15
Format: DJVU | PDF
File size: 12 MB
Number of pages: 15
Format: DJVU | PDF
File size: 12 MB
Currently, there are no manuals on sale that instruct you to quickly perform counting operations in your mind. We found it useful, therefore, to collect in a brief brochure the simplest and most easily digestible techniques for quick oral counting. They are designed for average abilities and do not mean public performances on the stage, but the needs of everyday life...
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