Books, articles, and handouts on a variety of topics recorded on computer media; Non-fiction books on a variety of topics recorded on computer media; Downloadable e-books, articles, and handouts on a variety of topics; Downloadable non-fiction e-books on a variety of topics
Electrical and Scientific ApparatusA series of books, articles, and handouts on a variety of topics; A series of non-fiction books on a variety of topics
Paper Goods and Printed Matter