are carbohydrate rich, staple tuber vegetables of west african origin. botanically it belongs to the family dioscoreaceae, in the genus, dioscorea. yams, whose name comes from the senegalese 'nyami' meaning to eat, were another important crop because they provided the crucial vitamin c that enabled...
and high-tech biological amino acid products. on january , , the company was listed in the national equities exchange and quotations (commonly known as "new three board"). it is a new milestone in the history of the development of the company, which will play a significant role in promoting the development...