00309nam a2200109Ia 450000500170000000800410001708200120005810000140007024500570008426000500014130000080019120260224040946.0260224s9999||||xx |||||||||||||| ||und||  a630 SIN  aSingh, K. 0aPerspectives on the micronutrient nutrition of crops  aJodhpur : Scientific Publishers (India)c2001  a295