TY  - BOOK
AU  - Ragan,Donal M.
TI  - Structural geology : : an introduction to geometrical techniques 
SN  - 9780521745833
U1  - 551.8 
PY  - 2008///
CY  - Cambridge : 
PB  - Cambridge University Press, 
KW  - Geology, Structural
KW  - Stereographic Projection
KW  - Plans and Topography
N1  - Includes bibliographical references and index
ER  -