I. Zabalza - E. Llera, Fc Editorial
$26.00
Gaceta N° 38.536, la Piedra
$2.00
C. Dieguez - R. Yturriaga, Mcgraw Hill
$40.00
C. Stone - R. Humphries, Mcgraw Hill
$90.00
S Berti - S Cordoliani, Fundacion Empresas Polar
$2.25
Carlos Moros Puentes, Juridicas Rincon
$6.00
Ricardo Bulmez, Urania
$15.00
Gaceta N. 39.912, la Piedra
$2.50