Science journal lists only the first page (and not the page-range) in its bibliography. I have searched and failed to find a bit of CSL that means I can specify that the page variable returns only the first page.

I have found a variable called page-first in the CSL schema but it made no difference:

## a synonym for "page" (to be deprecated)
"page-range"
| "page-first"

There's a slight glitch to be sorted out on CSL-side for this item. It seems that "page-range" and "page-first" appear in the schema as locator terms, not as variables. In Zotero-speak, that would mean that these terms would turn up in the pull-down list of pinpoint types in the citation menu that we call up from the word processor. This appears to be a mistake, as these terms aren't needed there -- if the user wants to pinpoint the "first" page, they can just enter a single page number, and Zotero/CSL will automatically apply the label for a single page (p.) rather than multiple pages (pp.).

The intention seems to have been to add these instead as variables for use in the bibliography, which is a different section of the schema. Once that's been confirmed and the schema amended, these can be made available in the new processor, and styles that depend on them can be upgraded. As Rinze notes, it will take some time for the new processor to work its way through integration and testing, but it is coming.

Not sure of the revision history, but "page" and "page-first" are certainly in the right place in the schema, and have been implemented for the use of Zotero and tested. Deployment of the new processor is expected to start sometime early next year.