000 00312 am a2200121 a 4500
100 1 _aRiddolls, A.W.
245 1 _aConcrete on the farm
260 _aChristchurch
_c1948
300 _a1-5 p.
942 _2udc
_cB
440 _aFarm Canterbury Chamber of Commerce. Agricultural Bulletin No. 227
901 _aS54282
999 _c112394
_d112394