TY  - BOOK
AU  - Kells Lyman M.
AU  - Kern Willis F.
AU  - Bland James R.
ED  - McGraw-Hill book Company Inc.
TI  - Plane and spherical trigonometry
PY  - 1940///
CY  - New York, London
PB  - McGraw-Hill book Company Inc
N1  - Indeks
ER  -