The disadvantages of helium for airships

19 page report entitled 'The disadvantages of helium for airships'. The final page has the initials P.L.T. in the bottom right-hand corner

Details

Extent:
1 file
Identifier:
BNW/BB5/1
Access:
Open Access
rights:
Copies may be supplied in accordance with current copyright legislation and Science Museum Group terms and conditions

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