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- 9 CELB - Borborema Electricity Company
- 9 Companhia de Eletricidade da Borb...
- 8 Borborema Electricity Company - CELB
- 7 Cotton culture
- 6 Algodão
- 6 CEAG - PB - Centro de Apoio à Peq...
- 6 CEAG - PB - Support Center for Sm...
- 6 Cotton
- 6 Cultura do algodoeiro
- 5 Brazilian Agricultural Research C...
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Date issued
- 14 1990 - 1998
- 157 1980 - 1989
- 1 1979 - 1979