TY  - BOOK
ED  - 
TI  - Saga Pit And Quarry Textbook
U1  - 622.362 SAG 1st.ed.
PY  - 1967///
CY  - London
PB  - Macdonald & Co. Ltd.
KW  - Sand And Gravel Industry
KW  - Great Britain
N1  - Includes bibliographical references ( p. : 230 - 232 ), indexs ( p.: 235 - 239 )
ER  -