000 00244nam a22000977a 4500
082 0 _a001 ESS
245 1 0 _aEssentiol knowledge for all
260 _aLondon :
_bOdhams Press Limited,
_c?
300 _a512 p. ;
_c20 cm.
650 4 _aKnowledge
_9163850
999 _c289272
_d289208