Справочник "Качество воды"
The "Water Quality" guide is translated from the American Coffee Rapid Association from a pdf document consisting of page scans. The result is a new pdf document in Russian with preserved formating.
The year 2014. 30 pages, about 70 thousand. by ZBP
The year 2014. 30 pages, about 70 thousand. by ZBP
Czernihów 
Gotowy do podjęcia pracy