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thanx :)

does any1 have any info/notes on the production, uses, benefits/problems of the medical radioisotope Tc-99m and the industrial radioisotope Cobalt-60? much help would be appreciated :) thanx

hii. i've decided on using this leunig cartoon as 1 of 3 related materials for my assignment. doez any1 have any ideas of what would go well with it? my assignment is based on the quote "To get through the hardest journey we need take only one step at a time, but we must keep on stepping"...