I am not too sure on the first, but the 2nd, 3rd, 4th ~~ 299, 297, 280
The first one is #311.
Thanks again guys! Hector, can you confirm 297? the web page at Bauldelcomic.com lists that one as a Teen Titans reprint. They might wrong, though.
.well....there is one for sale from Pedro here:
http://www.ebay.com/itm/HISTORIAS-FANTASTICAS-297-NOVARO-MEXICAN-COMIC-1972-/380574839742?pt=US_International_Comics&hash=item589c0733be
He had a nicer one listed but someone bought it.
I can't imagine who that would be.