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Ayuchecaria, N.; Nugroho, W.; Aryzki, S. D Determination Of Sun Protecting Factor (SPF) Value And Characteristics Test Of Physical-Chemical Properties Of Dayak Powder Nanoherbal Preparations: Determination Of Sun Protecting Factor (SPF) Value And Characteristics Test Of Physical-Chemical Properties Of Dayak Powder Nanoherbal Preparations. pharmaceutical care and science 2022, 3, 140-146.