TY - JOUR T1 - Reproductive system and copulation in Amphiscolops langerhansi (Turbellaria Acoela). JF - Biol Bull (Woods Hole) Y1 - 1937 A1 - Hyman,LH SP - 319 EP - 326 KW - Amphiscolops langerhansi KW - Convoluta langerhansi KW - Heterochaerus langerhansi KW - Polychoerus langerhansi VL - 72 ER -