"spence, r j. "
small-scale production of cementitious materials: / r.j. spence - ed. - uk : intermediate technology 1980. - ", 49p.; 21 cm."
0 903031 612
TA438 / .S64 1980
small-scale production of cementitious materials: / r.j. spence - ed. - uk : intermediate technology 1980. - ", 49p.; 21 cm."
0 903031 612
TA438 / .S64 1980