TY - BOOK AU - Atwater,Richard AU - Atwater,Florence AU - Lawson,Robert TI - Mr. Popper's penguins T2 - Scholastic guided reading program Level T SN - 0590477331 U1 - F ATW/O PY - 1966/// CY - New York PB - Scholastic KW - Penguins KW - Fiction N2 - Mr Popper starts out with one penguin in his house, but before he knows it there are twelve ER -