00487nam a22001457i 4500001001000000005001700010008004100027082001900068100002000087245012600107250001000233260005100243300001700294650003000311SXC02722220260819093817.0260101s1998    ii            000 0 eng d  a425 MUR-E2222  aMurphy, Raymond10aEssential English grammar: A self study reference and practice book for elementary students of English /cMurphy, Raymond  a2 ed.  abCambridge University Press, Cambridge,c1998  ap. ;c22 cm. 0aEnglish structural system