Ecological sustainable high crop yields using sewage sludge

<div>Lecture given by Doctor C. Edward Clapp, Research Chemist USDA-ARS and Professor of Soil Biochemistry at the University of Minnesota, USA at the Waite Campus, University of Adelaide, 8.12.1994</div><div><br></div><p>This lecture is part of the Campus Seminars and Distinguished Lecturer Series, Waite Campus, University of Adelaide, 1991 – 1997. </p> <a href="https://figshare.com/projects/Campus_Seminars_and_Distinguished_Lecturer_Series_Waite_Campus_University_of_Adelaide/17756">https://figshare.com/projects/Campus_Seminars_and_Distinguished_Lecturer_Series_Waite_Campus_University_of_Adelaide/17756</a>