However, many surface irrigation networks were initiate... N Nagaraj - 《Agricultural Systems》 被引量: 40发表: 1999年 DEVOLVED BUDGETARY MANAGEMENT IN LOCAL GOVERNMENT: LESSONS FROM A SHIRE COUNTY The changing environment of public sector organisations has, in recent years, focused attention on ...
The properties of light and water, and the refractive index of water leads to an interesting effect known asSnell's window. You will see a large circle of light, too large for most lenses, if you look up on a sunny day. Through this circle you can see whatever is on the surface, li...