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Dear sirs,

    I asked for an unsubscribing, but it is for a short time. I will do an
Agroecology Course in Costa Rica. I looked sanet very much and I will return to
it whem I arrive from Costa Rica.

    Long life for all,

    Evandro do N. Silva
    Universidade Federal da Paraiba
    Joao Pessoa / PB   BRAZIL