Fraga Garcia, Trillas
$19.50
Gaceta No. 6.017, Njr
$2.00
Gaceta No. 39.019, Njr
$2.00
Gyawaly, Lippincott
$50.23
Gaceta Nº 40.440, la Piedra
$1.40
C. Burrus - J. Mcclellan, Prentice Hall
$12.28
J. Rivas Miranda, Mcgraw Hill
$25.00
Gaceta Nº 40.468, la Piedra
$1.40
Joseph E. Muscolino, Lippincott
$58.00