000			00393nam a22001577a 4500
003			OSt
005			20121009150007.0
008			121009b xxu||||| |||| 00| 0 eng d
020			_a962707604X
082			_a428.24 ETH
100			_aEtherton, A. R. B.
245			_aUnderstanding 2.
260			_bAlpha Educational Books Limited, _c1984.
300			_avi, 82 p. _bill. _c26 cm.
942			_2ddc _cBK
999			_c2227 _d2227