@article {5309, title = {Reproductive system and copulation in Amphiscolops langerhansi (Turbellaria Acoela).}, journal = {Biol Bull (Woods Hole)}, volume = {72}, year = {1937}, month = {1937}, pages = {319 - 326}, keywords = {Amphiscolops langerhansi, Convoluta langerhansi, Heterochaerus langerhansi, Polychoerus langerhansi}, author = {Hyman,LH} }