Association of German Philatelists e. From (editor), German EAST-AFRICA-LINE. Medical history, postal history and sea mail cancel" 1976 / 1978. Even publishing house, Hamburg / Kirchlinteln, booklet 1 ++ 2 complete - 324 S. Bound in boards - special print the collector German colonial postage stamps and the working group shipãs mail, cover: paperback / paperbacks.