Scientific information is published in several types and formats:
Both the type of a publication (book, article, presentation…) and the format of a publication (printed, online) have an influence from which information source you must search them for.
BOOKS can de found from Library databases. Electronic books can also be browsed and searched from electronic books platforms (e-book databases). Google Books can search across the full-text content of a book, but the whole book is not necessarily available for online reading.
ARTICLES can be searched for from Reference databases, which collect metadata of huge amount of publications and publishers. Full-text databases usually offer access and search tools to a limited collection of electronic articles, typically the journals published by one publisher only. UEF-Finna: internationals e-materials can search across several reference or full-text databases in tandem. Google or Google Scholar can reach articles from various sources, like full-text databases or open access archives and homepages.
UNFORMAL publishing channels, like presentations, lectures and working papers, are available through Google searches.
Here are some examples which sources to use: