There are many ways to keep a ladder from slipping. The easiest “put on” her old sneakers or shoes with a rubber sole.
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BIKE “ON THE CONTRARY”? The VELOMOBILE!
In the journal "modelist-Konstruktor" No. 4'2003 was a good publication about the interesting developments of the members of the club of Tambov veloturistov: different models for every...
SECRETARY OF THE STUDENT
Many original equipment for studying and doing something they demonstrated this year in Moscow at the International exhibition "Technical means in educational process". Special interest...
