TY  - BOOK
AU  - Walkar, John
AU  - Awange, Joseph
TI  - Surveying for civil and mine engineers: Theory, workshop and practicals 
SN  - 9783319531281
U1  - 526.9 
PY  - 2018///
CY  - Switzerland
PB  - Springer
N1  - 0; 0; 0; 526_900000000000000_WAL
ER  -