00379nam a2200121 a 450000500170000000800410001702000180005805000260007610000180010224500940012026000360021430000070025020140412111354.0050704s19uu    xx            00    eng d  a0-673-18371-8  aTR(GS 420.7bP41 1987  aPerez, Yvonne  aLet's learn english :bSecond language activities for the primary grades /cYvonne Perez.  aU.S.A :bScott Foresman,c1987.  a91