Sales inched up at Lagardere Publishing in the first quarter, rising €6 million to €576 million, “thanks in particular to the success of bestsellers in the United Kingdom and the United States.” US sales rose 3.4 percent — after a tough performance a year ago — helped by digital audio, science fiction sales at Orbit, and Liz Cheney’s Oath and Honor. In the UK, where they publish Rebecca Yarros, sales gained 4.8 percent. In France, however, sales dropped 4.8 percent.