Lists of Tables, Figures, etc in xsl-fo

I've be studying Bob's XSL book, but I can't seem to find out how to change the pagination on book TOCs and LOTs. I've figured out how to specify which LOTs get built (tables, figures, etc), but each of them appears on PDF as a separate recto-verso pair, with the verso being empty in each case. My LOTs are less than a full page, and I'd rather run them together with no page breaks separating them. The main TOC fits on one page, but generates an empty verso page. Is there a way to suppress the page breaks?