1.		Especificações E 1 - 1951 / Laboratório de Engenharia Civil
2.		Postes
3.		Postes
4.		Postes
5.		British construction equipment : building, quarring, civil engineering / The Federation of Manufacturers of Construction Equipment
6.		British construction equipment : building, quarring, civil engineering / The Federation of Manufacturers of Construction Equipment
7.		British construction equipment : building, quarring, civil engineering / The Federation of Manufacturers of Construction Equipment
8.		British construction equipment : building, quarring, civil engineering / The Federation of Manufacturers of Construction Equipment