E. Rodriguez - F. Suarez, Romor
$17.00
F. Kerlinger - H. Lee, Mcgraw Hill
$43.29
Piergiorgio Corbetta, Mcgraw-hill
$38.00
Margarita A. de Sanchez, Trillas
$25.00
Marcela Benassini, Prentice Hall
$20.88
Gyawaly, Lippincott
$50.23
Sue Kay - Vaughan Jones, Macmillan
$1.00