Style de citation APA

Witkop, B. Paul Ehrlich and his magic bullets - revisited. Proceedings of the America Philosophical Society, 540-557.

Style de citation Chicago

Witkop, Bernhard. "Paul Ehrlich and His Magic Bullets - Revisited." Proceedings of the America Philosophical Society : 540-557.

Style de citation MLA

Witkop, Bernhard. "Paul Ehrlich and His Magic Bullets - Revisited." Proceedings of the America Philosophical Society, , pp. 540-557.

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