Telecontrol equipment and systems  - - Part 2: Operating conditions - Section 2: Environmental conditions (climatic, mechanical and other non-electrical influences) IEC 870-2-2 /  
 IEC 870-2-2 
ISO, IEC. 
 - First edition. 
 - Geneva :   ISO :   IEC,   1996. 
 - 33 stron ;   30 cm.