Karla Longree Sanitary techniques in food service - London John Wiley & Sons 1971 - 217p Karla Longree & Gertrude G. Blaker: Sanitary techniques in food service. London. John Wiley & Sons, 1971. 0-471554460--(642LON) ENGLISH ISBN: 0-471554460 Dewey Class. No.: 642 / LON