voici un livre lisible en ligne ,
Mechanical and Electrical Equipment for Buildings (12 eme edition) ,page 1045 :
https://books.google.fr/books?id=3kebBAA...36&f=false
Mechanical and Electrical Equipment for Buildings (12 eme edition) ,page 1045 :
https://books.google.fr/books?id=3kebBAA...36&f=false

