TY  - BOOK
AU  - Coleman, E.H.
AU  - Nixon, P.J., coaut.
ED  - Building Research Establishment (Inglaterra).
TI  - survey of possible sources wales of raw materials for the m-anufacture of a light tweight expanded slate aggregate / E.-H. Coleman and P.J. Nixon
CY  - Watford, [Inglaterra] : BRE
ER  -