Two studies were conducted to determine the technical and financial feasibility of agroforestry systems in Punjab, Pakistan. One study was on cultivated land and examined the effects of single row, 6 to 71\over2 year old, shelterbelts on wheat and sorghum yield. Three different …
"3" Result
Sort By:
Entry roofs in underlying multiple seam mines are vulnerable to failure under the influence of stress transferred from the upper seam workings. Overburden depth, innerburden thickness, percentage of hard rock in the innerburden and relative location of pillars in the two seams a…