000 00309 am a2200121 a 4500
100 1 _aImperial Bureau of Plant Genetics
245 1 _aHerbage research circular
260 _aAberystwyth
_c1930
300 _a1-3 p.
942 _2udc
_cB
440 _aResearch Herbage Research Circular No. 4
901 _aS54612
999 _c112738
_d112738