Sistemụ ndozi mpụga nke mpụga sistemụ nrụpụta dị na mpụga na-a waare ahụ na-agwọ ọrịa, ogologo mmebi. Ọ bụ Dr. Gavriil Mecharov mepụtara ya n'afọ ndị 1950 ma ọ bụ na-abụ kemgbe usoro ọgwụgwọ ọgwụgwọ dị mma.
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