TY  - BOOK
AU  - Courant R Au.
AU  -  Mcshane E J. Tr.
TI  - Differential and integral Calculus
T2  - Routledge Library Editions- Economics
U1  - B32, J0.2\TD 
PY  - 1950///
CY  - London
PB  - Blackie & son Ltd.       
ER  -