Its a IGNOU BLIE-222 solved assignment for you in a descriptive way. You can get each and every detail in this. All questions are covered and well explained, language is easy for better understanding. Buy this from us and get best help for your coming examination/assignment. With the advent of printing from movable types in 1450s, the production of publications increased enormously giving rise to different types of publications such as books, pamphlets and periodicals. The hand-written documents like manuscripts, notes, and diaries continued to co-exist along with printed documents. All these formed the documentary sources of information.