TY  - SER
AU  - Tomzack,Helena María de Amorim
TI  - Subsidies for monitoring rivercrossings and fishing boat points on a section of the Apa River, at the Brazilian/Paraguayan border
PY  - 2012///
KW  - Hidrografía
KW  - Monitoreo
KW  - Brasil
KW  - Paraguay
ER  -