00272nam a2200121   45000010006000000050017000069000010000231000024000332450027000577730042000849420007001269990017001339397520260918153938.0  a75141  aVELASCO, Gustavo R.  aDerecho administrativo  gC000.113 E921 1943, Vol. 1. 45-84 pp.  c16  c93975d93975