TY  - BOOK
AU  - Higgs Donald V
AU  -  Tunell George
TI  - Angular relations of lines and planes :Basic graphical and numerical methods for the solution of geologic and crystallographic problems
U1  - H1:B, K6 
PY  - 1966///
CY  - San Francisco 
PB  -  W H Freeman      
KW  - Minerology
N1  - Bibliography p
ER  -