00725cam a2200229 4500 424215324 TxAuBib 19040101120000.0 960621s1992||||||||||||||||||||||||eng|u 9780448089195 $4.95 044808919X $4.95 (OCoLC)32830604 OWR OWR TxAuBib Dixon, Franklin W. The disappearing floor / by Franklin W. Dixon. New York : Grosset & Dunlap, 1992. 176 p : ill ; 20 cm. Hardy boys mystery stories ; ; 19 750 Lexile. 19040101. Hardy boys mystery stories ; ; 19.