Robertson has shown that the typhoid bacillus can grow very easily in certain soils, can persist in soils through the winter months, and when the soil is artificially fed, as may be done by a leaky drain or by access of filthy water from the surface, the microorganism will take on a fresh growth in
filthy הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד