The Revista Nueva Realidad organised on 12-6-2021 a webinar.
It theme was ‘Basics of Marxist Economics: Marx’s Law of Value’.
Michael Roberts (economist), Abelardo Marina Flores (prof. of Economics, Autonomous Metropolitan University) and Stavros Mavroudeas (prof. of Political Economy, Panteion University) gave the seminar.

My presentation follows below:
The video recording of the webinar can be assesed via the following links:
https://www.facebook.com/100852118355277/videos/412065370247321?tn=F