00268nam a2200097Ia 450000500170000000800410001705000150005810000120007324500470008526000380013220251229085734.0251229s9999    xx            000 0 und d  aQH 317.F7   aFry, V. 0aExploring biology in the laboratorycV Fry  aNew Yorkb Saunders Collegec1984