Soya / comp. by: Gerard Lof, Annemieke Tops, Jenneke Netjes ; transl. [from the Dutch] by: M. VerheijPig husbandry in the tropics / [comp.: Dick Muys and Geert Westenbrink ; transl. from the Dutch: M. Verheij]Soya / comp. by: Gerard Lof ; rev. by: Annemieke Tops, Jenneke Netjes ; transl. [from the Dutch] by: M. VerheijPig keeping in the tropics / by: Dick Muys, Geert Westenbrink ; English transl. [from the Dutch] by: M. Verheij and R. CornerPig keeping in the tropics / by: Dick Muys, Geert Westenbrink ; rev. by: Rienke Nieuwenhuis ; English transl. [from the Dutch] by: M. Verheij and R. CornerPig keeping in the tropics / by: Dick Muys, Geert Westenbrink ; rev. by: Rienke Nieuwenhuis ; English transl. [from the Dutch] by: M. Verheij and R. CornerProtection of stored grains and pulses / author: Inge de Groot ; transl.: M. Verheij