00645nam a2200193 a 4500 0065016742 DLC 372 HAR 1994 A021 Or. Dublin, Peter. Elementary science / New York : HarperCollins College Publishers, c1994. 176 p. : ill. ; 24 cm. + 1 computer disk (3 1/2 in.). System requirements for computer disk: IBM-compatible PC; 640K RAM; DOS 3.3 or later; Epson, IBM/ProPrinter, HP LaserJet or compatible printer. Science Science Pressman, Harvey. Barnett, Eileen. EK 12836 12836 0 0 0 372_000000000000000_HAR_1994_A021_OR 0 62928 LBA LBA A021 2017-08-17 372 HAR 1994 A021 Or. A16511 2017-08-17 2017-08-17 EK