"lester, d . "
Quarrying and rockbreaking:the operation and maintainance...: / D.. Lester - 1 ed. - uk : intermediate technology 1981. - ", 116p.; 22 cm."
0 903031 80 9 hard cover
TN939 / .L47 1981
Quarrying and rockbreaking:the operation and maintainance...: / D.. Lester - 1 ed. - uk : intermediate technology 1981. - ", 116p.; 22 cm."
0 903031 80 9 hard cover
TN939 / .L47 1981