£14.00

88p illustrated paperback, well preserved, clean and tight copy

£14.00

Some Considerations Concerning Symmetry (Natural Science: A Monthly Review of Scientific Progress, Volume 15, No 90, 1899)

£16.00

12p essay in "Natural Science", contains also Notes, Fresh Facts, A W Bennett on the Flora of the ...

£16.00

Zur Erinnerung an Heinrich Wydler.

£14.00

26p sewn offprint, grey paper cover, portrait, extended bibliography and list of Genera he studied, ...

£14.00

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