The occupational structure and the training of operatives for the building industry.
Nelson, James L'Anson.
Jeanes, Ronald Eric.
Warrington, E. W. F.
Garston :  Building Research Station, 
1968.
paper I: what to train for, by J. L'a. Nelson and R. E. Jeanes -- paper II: how best to train, by E. W. F. Warrington.