TY  - BOOK
AU  - Leathem, J. G.
TI  - Elementary theory of the symmetrical optical instrument (the)
SN  - 9781107493599
U1  - 514.88 
PY  - 2015///
CY  - Cambridge
PB  - Cambridge
KW  - MATHEMATICS
KW  - SYMMETRICAL OPTICAL SYSTEM
ER  -