000 00296 a2200121 4500
080 _a627.1
_bV 24 W
245 1 _aWater in the service of man
_cby H.R. Vallentine
260 _bPenguin Books
_c1967
650 _aNatural Water
100 1 _aVallentine, H.R.
_d
300 _a222 p.
901 _a110401
999 _c40334
_d40334