9 books • 2 series
Stoves and Trees (Routledge Library Editions: Forestry)
Purple and Gold
Animales Salvajes
Perros y Cachorros
Gatos y Gatitos
Animales de Granja
Excavadoras y Volcadores
Tractores y Camiones
Improved Cooking Stoves in Developing Countries (Technical Report, No 2)