Alberto Arias Amaro, Romor
$7.00
M. Galera - M. I. Galera, Trillas
$6.00
Gaceta N. 39.912, la Piedra
$2.50
Lind - Marchal - Wathen, Mcgraw Hill
$51.91
Gyawaly, Lippincott
$50.23
Gaceta No. 6.209, Ml, C.a.
$1.50
Gaceta N. 40.639, la Piedra
$4.00