Ships and marine technology – Graphical symbols for technical documentation – Part 18: Sanitary installations; Text in German and English
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2012
Ships and marine technology – Graphical symbols for technical documentation – Part 18: Sanitary installations
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2002
