Acid preparation of fossils using sulfamic acid, a weak organic acid, and its advantages over acetic and formic acid preparation
https://www.powershow.com/view/3bdb72-YzczM/Acid_preparation_of_fossils_using_sulfamic_acid_a_weak_organic_acid_and_its_advantages_over_acetic_and_formic_acid_preparation_powerpoint_ppt_presentation
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