TY  - JOUR 
T1  - The persistence of ant-following birds in small amazonian forest fragments
JO  - Acta Amazonica
A1  - Harper, Lee H.
SN  - 0044-5967
UL  - 10.1590/1809-43921989191263
VL  - 19 
Y1  - 1989
PB  - Brazil 
ER  -