Mối quan hệ giữa cặp phạm trù tất nhiên và ngẫu nhiên

Paleoanthropologists believe that the predominant diet of our earliest omnivorous ancestors consisted mostly of

How did presidential reconstruction allow black codes to be passed

The primary purpose of a certificate of confidentiality is to: allow law enforcement to investigate abuse cases.protect researchers from disclosing conflicts of interest.prevent subjects from knowing the purpose of a study.protect identifiable research information from compelled disclosure.