TY  - BOOK
AU  - Irala, Narciso
TI  - Mental Efficiency Without Fatigue
U1  - 152.1886 
PY  - 1975///
CY  - No Place
PB  - Unknown Publisher
KW  - general stack
KW  - Philosophy & psychology
KW  - Psychology
KW  - Perception, movement, emotions & drivesGeneralia
ER  -