00685cam a2200205 i 4500 510281284 TxAuBib 20110620120000.0 201100|||||||||||||||||||||||||||||und|u TxAuBib rda Aron, Elana. Obstacle Illusions / by Aron, Elana. C I S Communications, Incorporated, 5/01/1992. 9.5 x 6.2 x 0.8 inches. txt rdacontent n rdamedia nc rdacarrier 20110620.