Лабораторный практикум по дисциплине "Технология ювелирного производства" для студентов 4-5 курсов специальности 1-52 02 01 "Технология и оборудование ювелирного производства"
“ Just as there is no loss of basic energy in the universe, so no thought or action is without its effects, present or ultimate, seen or unseen, felt or unfelt. ” ― Norman Cousins
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