Widdowson, J. P. <br/><br/>
Zinc deficiency on the shallow soils of niue. II. Effects of zinc sulphate on the yield and nutrient composition of crotalaria and sweet corn 

<br/><br/> Sobretiro de: New Zealand Journal of Agricultural Research . 9(3):748-770, 1966 
<br/><br/><label>LCCN: </label>53859 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zinc--Efecto en plantas.