000 00239 a2200109 4500
080 _a547:577
_bJ 72 M
245 1 _aMechanism of life
_cby J. Johnstone
260 _c1921
650 _aMechanisms
100 1 _aJohnstone, J.
_d
901 _a3432
999 _c29316
_d29316