Copper and Zinc Uptake by Pakchoi and Rice as Affected by Applying Manure Compost with Different Levels of Cu and Zn ConcentrationsT. H. Huang, S. W. Su, H. Y. Chang, C. C. Huang and Z. S. ChenE3S Web of Conferences, 1 (2013) 15008DOI: https://doi.org/10.1051/e3sconf/20130115008