TY  - BOOK
AU  - Leith,C.K.
TI  - Rock cleavage
T2  - U.S. Geological survey. Bulletin
AV  - QE75 .B9
PY  - 1905///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Rocks
KW  - Cleavage
N1  - Subject series: D, Petrography and mineralogy, 30; E,  Chemistry and physics, 42; "Literature on secondary rock cleavage": p. 13-14; Includes index
ER  -