ENGINEERING PROPERTIES OF AGRICULTURAL SOILS. Soil Classification by Particle Size - Textural Triangle. Soil Mechanics. Densities. AGRICULTURAL MACHINERY - FUNCTIONAL ELEMENTS. Terminol-ogy and Definitions for Agricultural Tillage Implements and Agricul-tural Equipment. Tillage Tool Power Requirements. Cutting of Bio-logical Materials. Threshing, Separating, and Cleaning. Human Fac-tors - Vibration and Noise in the Workplace. Human Factors - Ther-mal Comfort, Workloads, Forces, and Anthropometrics. PLANT GROWTH DATA. IRRIGATION ENGINEERING. Irrigation Water Quality. Irrigation Well Design and Specifications. Sprinkler System Design. Irrigation Efficiencies. Volume Gun Systems. Drip Irrigation Systems. Irrigation Practices and Operations. Information to Consider in Designing and Selecting Irrigation Systems for Agri-culture and a Description of Different Types of Systems. Appendix. Index.