000 00265cam a2200109 4500
020 _a0047960434 (pbk.)
100 1 _aBEDFORD Bruce L
245 0 _aChallenge underground
260 _aLondon:
_bGeorge Allen & Unwin Ltd.,
_c1975
300 _a192p.
945 _i0011684
_rY
_sY
999 _c231
_d231