000 00269nam a2200109Ia 4500
008 130225s9999 xx 000 0 und d
245 _aImportance of nitrogen to the growth of plants
260 _aIthaca
_c1906
300 _a177-201p.
901 _a19419
942 _cB
_2udc
999 _c2845
_d2845