000 00318 am a2200121 a 4500
100 1 _aCochrane, R.H.
245 1 _aDrawbar pull and tractor safety
260 _aChristchurch
_c1949
300 _a1-4 p.
942 _2udc
_cB
440 _aCanterbury Chamber of Commerce. Agricultural Bulletin No. 240
901 _aS54295
999 _c112411
_d112411