TY  - BOOK
AU  - Oualline, Steve
AU  - Oualline, Grace 
TI  - Practical Free Alternatives to Commercial Software
SN  - 9781484247556
U1  - 005.13 
PY  - 2018///
CY  - [s. l.]
PB  - Apress
KW  -  COMPUTERS Programming Open Source
KW  - Open source software
N1  - Includes index. Reprint Year 2023; index
ER  -