books.google.com - Introduces the study of soils and the steps in the scientific method and outlines simple experiments that demonstrate the basic principles of soil composition, the creatures that live in soil, and how scientists work....http://books.google.com/books/about/Step_by_Step_Experiments_With_Soils.html?id=hq81pwAACAAJ&utm_source=gb-gplus-shareStep-by-Step Experiments With Soils
Introduces the study of soils and the steps in the scientific method and outlines simple experiments that demonstrate the basic principles of soil composition, the creatures that live in soil, and how scientists work.
