000 00295cam a22001097a 4500
008 180718b1971 xxu||||| |||| 00| 0 eng d
020 _a335 02506 4
082 _aT2 Oh2
245 _aThe Man - made World
_cThe Open University
260 _aBuckinghamshrire
_bOpen University
_c1971
300 _a183p
999 _c411819
_d411819