000 002590000a22001210004500
245 _aThe world of learning 1979-80
250 _a30th ed.
260 _aLondon
_bEuropa
_c1980
500 _a2 vols
080 _a06(058)
_bW6
041 _aEN
942 _cBK
999 _c111391
_d111391