A borracha : estudo economico e estatístico / José Carlos de Macedo Soares; pref. António Carlos
Alimentação : para principiantes / Susan George; Nigel Paige
Birds of the world : a survey of the twenty-seven orders and one hundred and fifty-five families / Oliver L. Austin, Jr.; Arthur Singer; Herbert S. Zim; Maurice Burton e Perter Scott
Portraits of the african wild / Gerald Cubitt