Archive image from page 50 of Die Samenreifung bei den Planarien. Die Samenreifung bei den Planarien diesamenreifungb00schl Year: 1907 Taf. I. riÂ£i> O V mm a |W/s kiV 1* 1> i-B-A- â *ry,-'i'''''''ri/-';.

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