TY  - BOOK
AU  - Donald R.LaTorre ...[et al].
TI  - Calculus concepts : : an informal approach to the mathematics of change / 
SN  - 9780618169429
U1  - 515  
PY  - 2002///
CY  - Boston: 
PB  - Houghton Mifflin, 
KW  - Calculus
ER  -