The BCIT Library has a selection of print and ebooks relating to your discipline.
First Search is the BCIT Library search engine and a good place to start. It simultaneously searches the Library's book collection, many full text journal articles, reports, DVDs, and electronic resources.
The asterisk is the wild card character e.g. regulat* will find regulation, regulatory, regulate...
If you're searching for articles on a topic, you'll want to search a database which is more focused on health sciences than First Search is. Some full text databases are listed here.
Below are some basic subject headings that can be used in the catalogue to find environmental public health related books at BCIT:
Environmental Health/Public Health ebooks at BCIT.