文档介绍：17. CHEMISTRY RESOURCES The reader can usually find a number of chemical information in encyclopedias, dictionaries, textbooks, scientific & technical data from the handbooks, tables pendia, scientific reviews, periodicals, conference proceedings & reports, official publications, business information and abstracting and indexing periodicals from libraries. However, increasingly, chemical data are being produced puterized form and the old manual literature searching has been significantly advanced puter-aided searching of the literature. Online searching via the and the World Wide Web has been getting a lot of attention due to very rich chemistry resources on them. Online searching is fast. You can search thousands of documents and have answers to your questions ina matter of minutes. Online searching is convenient. You can login at your desk using a puter ora terminal and obtain important information whenever you need it. Online searching gives you flexibility. You can be as selective as you need to be or as inclusive as you ’d like to be 1. You control how much information you obtain. You can ask very simple questions. Or you can ask plex, multifaceted questions that would be difficult or impossible to answer by consulting printed resources. To access the chemistry resources on , you need a puter or terminal, a telephone line, and access toa work through a modem with munication software ora dataline to anization ’work. You will need know some the web sites of some online search services. You will also need a login ID and password or payment for some services. Various databases relating to the chemical literature have been developed on . These databases range from storing particular information on pounds, to the storage of abstracts and bibliographical information of the primary and secondary literature, to actual primary sources themselves. Some examples of electronic databases on that are currently used by chemical researchers are as follows. CAS databases on S