I am consistently seeing an error in ISBN lookup for items published by museums. The museum is being imported as the author, broken into Last and first (last=Art, first= Metropolitan Museum of).
Examples from May 24 and May 25:
ISBN 978-3925801228 (correct author is Anna A Ierusalimskaja . I got last=(Russia)|first=Gosudarstvennyĭ Ėrmitazh|last2=Nationalmuseum.|first2=Bayerisches. Correct info at https://www.amazon.de/Gr%C3%A4ber-Moscevaja-Balka-Fr%C3%BChmittelalterliche-nordkaukasischen/dp/3925801227)
ISBN 9780888540461 (correct author is Dorothy K. Burnham. I got last=Museum, first=Royal Ontario. Info here: https://books.google.com/books?id=-DPdPAAACAAJ