TY  - BOOK
AU  - Koch , Richard 
AU  - Rathnayaka , Sirisena 
TI  - à¶¯à·à¶ºà·à¶«à·à·à· à¶à¶´à¶»à·à¶¸à¶ºà¶§ 80/20 à¶à·âà¶»à¶¸à·à·à¶¯à¶º 
SN  - 9786246593216
U1  - 158.1 
PY  - 2025/// .
CY  - Colombo 10
PB  - Pahan , 
KW  - Applied Psychology
ER  -