00255nam a2200121   45000010006000000050017000069000010000231000017000332450028000507730031000789420007001099990017001167720620260918152752.0  a57019  aKELSEN, Hans  a¿Qué es la justicia?  gE800 S351 1975. 107-130 pp  c16  c77206d77206