- medium duty scaffolds
- строительные леса, подмости средней несущей способности
Англо-русский строительный словарь. 2013.
Англо-русский строительный словарь. 2013.
History of virtual learning environments 1990s — In the history of virtual learning environments, the 1990s was a time of growth, primarily due to advent of the affordable computer and of the Internet.1990s1990* Formal Systems Inc. of Princeton, NJ, USA introduces a DOS based Assessment… … Wikipedia