CHAPTER IV
COST AND THE MARGIN OF PRODUCTION
§1. _An Illustration from Coal_. We have already had occasion to note the symmetry which characterizes the relations of demand and supply to price. This symmetry was apparent throughout the argument of
COST AND THE MARGIN OF PRODUCTION
§1. _An Illustration from Coal_. We have already had occasion to note the symmetry which characterizes the relations of demand and supply to price. This symmetry was apparent throughout the argument of