I need to find some articles about floating roof storage tanks.
You can find articles on this subject in COM Library's science databases. Follow the link below to the Databases by Subject Libguide and select the Science tab. Then select a database to search.
I was able to find some articles about these types of storage tanks in Academic Search Complete by entering the following query: "floating roof" tanks. This retrieved about 75 articles, many of which were relevant. You can also modify your search through the search limiters on the left side of the screen or by clicking on a relevant article and then selecting individual subject headings that have been assigned to it.