Brothers of the Dragon(1992)
(The first book in the Brothers of the Dragon series)
A novel by Robin Wayne Bailey
Two brothers proficient in martial arts and wildernesss survival techniques discover a parallel world where the powers of Light and Darkness have been at war for thousands of years.
Used availability for Robin Wayne Bailey's Brothers of the Dragon
June 1993 : USA Mass Market Paperback
September 1992 : UK Paperback