3. Microeconomic Laws of Demand and Supply - Lidderdale
In this chapter we introduce the "Laws" of demand and supply. But we must recognize that economics is not an exact science. As Alfred Marshall (Principles of Economics: An Introductory Volume, 1890) explained: "The laws of economics are to be compared with the laws of the tides, rather than with the simple and exact law of gravitation.For the actions of men are so various and uncertain, that ...
Topic 5: Mining Methods-Part I-Surface mining
Nov 02, 2011· Topic 5: Mining Methods-Part I-Surface mining 1. Topic 5: Mining Methods Part I-Surface mining Hassan Z. Harraz [email protected] 2010- 2011 Prof. Dr. H.Z. Harraz Presentation This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course .