Books are nice.
Periodicals are current, sometimes more lively, and present information in smaller chunks.
But if you're new to ergonomics, relevant periodicals are hard to find. Here are some suggestions. None of them deals exclusively with office ergonomics, but IMHO they're all worthwhile for the office ergonomist. Many ergonomists rely on it to stay current, and use it as a jumping-off place for going to the original sources. Click here to go to the subscription page on its website, and while you're there check out the whole site.