There is a brief chronology of the main events in the company's history and a full biliography.
Otu mmemme weebụ nke a na-ewu ewu na isi ihe dị iche iche n'akụkọ ihe mere eme nke ụlọ ọrụ ahụ bụ akwụkwọ na-egbuke egbuke.