Library Resource
Informes e investigaciones
Diciembre, 1981
Grecia, Bélgica, Iraq, Chile, Alemania, Guatemala, Guinea-Bissau, Irlanda, Ghana, Irán, Islandia, Costa Rica, Colombia, Chipre, Hungría, Haití, Italia, Brunei Darussalam, Ecuador, Cuba, India, Brasil, Canadá, África
This course teaches the farmer about the water cycle. It covers rainfall, ground water, the water table, surface water, evaporation, and transpiration. It also delivers information on wells and springs, swamps, ponds, lakes, streams and rivers. It explains how water is necessary for life.