- differers
- Differers
Большой англо-русский и русско-английский словарь. 2001.
Большой англо-русский и русско-английский словарь. 2001.
Carl-Zeiss-Gymnasium Jena — Infobox University name =Carl Zeiss Gymnasium Jena native name = latin name = motto = established =1963 type =public school (Gymnasium) with special school section (Spezialschulteil) attached endowment = staff = faculty = president = provost =… … Wikipedia
Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… … Wikipedia