TY  - JOUR 
T1  - Knowledge hierarchy and professional knowledge
JO  - Cadernos de Pesquisa
A1  - Caria, Telmo H.
SN  - 0100-1574
UL  - 10.1590/198053141992
VL  - 44 
Y1  - 2014
PB  - Brasil 
ER  -