keyword: Science – 24 free books.
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Délio José Ferraz Pinheiro and Maria Auxiliadora da Silva
Alexander Turra and Marcia Regina Denadai
Paulo R. Teixeira de Godoy
Nelson Antonio Pirola
Cristiane Porto et al.
Roberto Leon Ponczek
Ana Cristina Teixeira Bonecker et al.
Maria Cristina Piumbato Innocentini Hayashi et al.
David J. Raymond