TY - BOOK AU - Postlethwait,S.N., Ross, Norris M. AU - x TI - The working cell: Minicourse development project SN - 0721663680 U1 - R574.07/W926 PY - 1976/// CY - Philadelphi, London PB - Saunders KW - Biology - Study and teaching N1 - x ER -