Think of a couple of friends and then : here's one national service every Ryvita enthusiast can do / The Ryvita Company Limited.

  • Ryvita Company.
Date:
[between 1940 and 1949?]

Licence: In copyright

Credit: Think of a couple of friends and then : here's one national service every Ryvita enthusiast can do / The Ryvita Company Limited. Source: Wellcome Collection.

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