521,511 WINGARD LEMUEL B. jr. /red./ Enzyme engineering.Papers in part from the Engineering Foundation Conference on ''En- zyme engineering''August 9-13,1971,Henniker, New Hampshire,and the 64th annual meeting of the American Institute of Chemical Engi- neers, December 1,1371,San Francisco,Califor- nia.Ed. Lemuel B.Wingard jr. New York 1972 Interscience Publishers a division of John Wiley und Sons 8° s. XIII, nlb.1, 415, ilustr. Biotechnology and Bioengineering Symposium nr 3.