TY  - BOOK
AU  - Perrett Heli
AU  -  Lethem Francis J.
TI  - Human factors in project work
T2  - World Bank Staff Working Paper. 397
U1  - "X6529, M0" 
PY  - 1980///
CY  - Washington
PB  - World Bank U. S. A.   
KW  - Securities
N1  - Bibliography p.83-85
ER  -