000 00310nam a2200121Ia 4500
008 170101s2012 xx 000 0 und d
082 _a631.52 ASH
100 _aAshraf m.
245 0 _aCrop Production for Agricultural Improvement
260 _aLondon
_bSpringer
_c2012
300 _a796 P
942 _2ddc
_cB
999 _c1518366
_d1518366