000 00337nam a2200133Ia 4500
008 130223s9999 xx 000 0 und d
245 _aEnergy allowances and feeding systems for ruminants
260 _aLondon
260 _c1975
300 _a79 p.
440 _aNo. 33; Great Britain Ministry
901 _pS27733
942 _cB
_2udc
999 _c121419
_d121419