00328nam a2200109Ia 4500008004100000082002900041100002700070245004000097260005300137300001000190650001800200140113s9999 xx 000 0 und d a578.085:579.25(047.1) N9 a"Tewari, J. P. et al" aAdvances in microbial biotechnology b"New Delhi : A.P.H publishing corporation, 1999" a567p. aBiotechnology