What is the Labour Theory of Value?

A simple explanation of a complex subject - and the reason why Marxist Economics is not Market Economics despite many revisionist attempts to marry them both like Oskar Lange the Chicago School Leftist.

For more on Polish revisionists Kalecki and Lange visit here:

https://democracyandclassstruggle.blogspot.co.uk/2015/01/michael-kalecki-and-oskar-lange-by.html