invento del siglo XX By jaimegd Sep 21, 1900 Satélite artificial Sep 21, 1900 television Sep 18, 1901 lavadora Sep 21, 1901 insulina Sep 21, 1901 cine Sep 18, 1903 automóvil Sep 21, 1903 avion Sep 21, 1907 plasticos Sep 18, 1928 penicilina Sep 21, 1990 máquina de escribir Sep 21, 2000 radio Sep 21, 2000 La píldora anticonceptiva Sep 21, 2000 laser Sep 21, 2000 computadoras Sep 21, 2000 Internet
