J
long and are numbered F. 18 to F.21. The degree of finish by the end of March showed that F.18 and F.21 were partly completed, whereas work on F.20 and F.21 was delayed owing to shortage of engine parts and iron plates.
X
X
X
J
long and are numbered F. 18 to F.21. The degree of finish by the end of March showed that F.18 and F.21 were partly completed, whereas work on F.20 and F.21 was delayed owing to shortage of engine parts and iron plates.
X
X
X