00305nam a22001097a 450000500170000000800410001702000220005810000190008024500440009925000110014326000410015420261105133645.0261105b        |||||||| |||| 00| 0 eng d  a978-0-521-51698-3  aDavid crystal   aThe Cambridge encyclopedia of language   bThird   bCambridge university press new yourk