TY  - BOOK
AU  - Metz, Sandi 
TI  - Practical Object Oriented Design in Ruby 
SN  - 9780321721334
U1  - 005.117 
PY  - 2013///
CY  - Boston 
PB  - Addison Wesley 
KW  - Data Science
N1  - Includes index
ER  -