1) causes various aspects of academic knowledge may be a general knowledge or specific technical knowledge, such as reading the textbook reading guide books assemble a twig in a variety of .
1) made with knowledge of the technical aspects may be common knowledge. Or specialized knowledge in various fields, such as reading texts book. Books in various fields and so on.
1) the academic knowledge in various may be common knowledge or specialized knowledge, such as reading the various fields Handbook. Reading books in the fields of various etc. .