TY  - JOUR 
T1  - The use and mis-use of some ecological terms and concepts in epidemiology
JO  - Memórias do Instituto Oswaldo Cruz
A1  - Avila-Pires, Fernando D.
SN  - 0074-0276
UL  - 10.1590/S0074-02761995000500003
VL  - 90 
Y1  - 1995
PB  - Brasil 
ER  -