00608naa#a2200181#i#450# EN\\bibl\68683 20241219145716.4 2307-7476 20160325b2016####ek#y0engy0150####ca RUS RU ON THE POSSIBLE SCHEMES OF NATURAL-VIRTUAL AND VIRTUAL-NATURAL LABORATORY EXPERIMENTS IN THE EDUCATIONAL PROCESS Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2016 4 с. Journal article local Kuzmin A A Romanov N N journals.igps.ru