$3.00

Petter Watson, Planeta

$4.50

Jim Hougan, Planeta

$7.25

Shere Hite, Prentice Hall

$27.03

Haim Medelson-j. Ziegler, Deusto

$2.00

Antonio Lopez Ortega, Mondadori

$8.91

$19.00

A. J. Hartley, Plaza Janes

$1.00

M. Stahl - S. Foreman, Lippincott

$2.50

J. Green - A. Chiaramida, Lippincott

$1.00

Peale, Norman Vincent, Grijalbo

$6.25

E. Tineo - M. Alfonzo, el Nacional

$0.35

J.j.benitez, Planeta

$10.00

Jorge Carrion, Debate

$1.05

El Nacional, el Nacional

$5.00