<Ul> <Li> "Dirigibles able to take to the air, being manufactured, repaired or assembled ." </Li> <Li> "Plant for the manufacture of hydrogen ." </Li> <Li> "Dirigible sheds and shelters of every kind for aircraft ." </Li> </Ul> <Li> "Dirigibles able to take to the air, being manufactured, repaired or assembled ." </Li> <Li> "Plant for the manufacture of hydrogen ." </Li> <Li> "Dirigible sheds and shelters of every kind for aircraft ." </Li>

Materials used in the construction of the zeppelin airships