00353nam a2200145 a 450000500170000002000150001708200130003210000150004510000150006010000150007524500190009026000260010930000290013563000430016420251202164121.0  a0582517389  a425bBAL  aBald, W.D.  aCobb, D. J  aSchwarz, A  aActive grammar  aLondonbLongmanc1986  aviii, 152 p.b24 cm.bPB  aStructural systems of standard English