00668cam a2200205 4500 243215910 TxAuBib 20010117120000.0 ||||||s1959||||||||||||||||||||||||eng|u Wa TxAuBib Syrocki, Boleslaus John, 1912- What is a rock [BOOK] / Pictures: Lucy and John Hawkinson. Chicago : Benefic Press, [1959] 44 p : illus ; 21 cm. What is it series, The 20010117. Readers Science. Geology Juvenile literature. The What is it series.