In 1939 de Zoysa bought a printing press .
In 1939 de Zoysa began to produce a series of educational books in Sinhala ; he also edited a weekly paper , the Dharmasamaya .
In 1939 de Zoysa bought a printing press , and began to produce a series of educational books in Sinhala ; he also edited a weekly paper , the Dharmasamaya .