back to brazil to pick up its 5 remaining &
northernmost tripoints 
on top of the 4 more southerly ones already bagged
alphabetically with argentina & bolivia 
brazilian map of brcope for probable thalweg channel
identification
http://www.info.lncc.br/wrmkkk/pe2.html
& the attached tripoint stretching diagram shows the
corrected or second guessed tripoint position 
perpendicular to the mouth of san antonio creek
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