TY - BOOK AU - Hyman, Libbie Henrietta TI - The Invertebrates: Volume 2. Platyhelminthes and Rhynchocoela: the acoelomate Bilateria SN - 070316619 U1 - 592 PY - 1951/// CY - New York PB - McGraw-Hill Book Co. KW - Invertebrates KW - Zoology ER -