Partitions, doorsets appendix : second programme : Unilock-Tenon International Ltd : product data.
Great Britain.Property Services Agency.Directorate of Architectural Services.
Croydon : Dept. of the Environment, Property Services Agency, Directorate of Architectural Services,
1978.
"This forms part III of agreement CR 10601/P2/14, incorporating part 111 of agreement CR 10600/D2/16."