Henderson, James Mitchell
The efficiency of the coal industry : an application of linear programming .-- Cambridge (Massachusetts) : Harvard University Press , 1958
.--XII, 146 p. 22 cm .-- ( Harvard Economic Studies ; v. 3 ).
The efficiency of the coal industry : an application of linear programming .-- Cambridge (Massachusetts) : Harvard University Press , 1958
.--XII, 146 p. 22 cm .-- ( Harvard Economic Studies ; v. 3 ).