YouTube – ¿Sistema-Mundo o Sociedad Mundial? Wallerstein-Luhmann, Dr. Juan Pablo Gonnet, CONICET, Argentina | Systems Community of Inquiry

s: search
c: compose new post
r: reply
e: edit
t: go to top
j: go to the next post or comment
k: go to the previous post or comment
o: toggle comment visibility
esc: cancel edit post or comment