Dragon Ball Z. Vol. 4 / story and art by Akira Toriyama ; [English adaptation by Gerard Jones ; translation, Lillian Olsen ; touch-up art and lettering, Wayne Truman].
"First published in Japan in 1984 by Shueisha Inc."--P. facing t.p.
"New and adapted artwork and text"--P. facing t.p.
"DB: 20 of 42."
"In the original Japanese edition, Dragon Ball and Dragon Ball Z are known collectively as the 42-volume series Dragon Ball. The English Dragon Ball Z was originally volumes 17-42 of the Japanese Dragon Ball"--P. facing t.p.
Book reads from right to left in the traditional Japanese format.
Summary
After training in the afterlife with the great martial arts teacher Kaio-sama, Goku returns to Earth to face the ruthless Vegeta, commander of the alien Saiyans.