
For convenient storage of magazines, clippings and other printed matter manufacture of a special cassette. Run them from any sheet material. For quick search edition paint the backs in different colors and attach brief information about the thematic content of each magazine. They filled the racks have a very aesthetic appearance, making the interior element of uporyadochennost.
V. ZAVIALOV, Samarkand
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ROCKET J. HAROLD
At the world Cup 1978, held in the city of Yambol (Bulgaria) in the class RC raketoplana S-4-D (the maximum mass of 240 g, the total impulse of the propulsion system 10-40 n*s) a...
THE RADIATOR FOIL
Fast and simple — to manufacture heat sinks for transistors and microcircuits made of copper or aluminum foil with a thickness of 0.1—0.3 mm. Plates are cut with scissors, carefully...