The RR repair system - possibilities of rationalisation in the repair and maintenance sector of heating, ventilation and sanitation industry (RRs Reparations-system) /
Johansson, B.
Myrsten, Karl.
Strömberg, Ake U.
Hardbottle, R.
Garston :  Building Research Establishment, 
1973.
Translated from Statens Institut för Byggforskningen, Stockholm, Report R43: 1970.