Reference

Andy, Huffman. "DDT" April 29, 2000, http://saturn.chem.indiana.edu/common/Environmental/ddt/ddt.htm

"DDT" April 28, 2000 http://origin.ch.ic.ac.uk/mim/environmental/html/ddt_text.htm

"DDT and the Peregrine Falcon" April 29, 2000 http://www2.ucsc.edu/~scpbrg/Student/ddt.htm

Puleston, Dennis. "Ospreys and DDT Ban" April 29, 2000http://www.edf.org/pubs/Newsletter/1976/Mar/d_column.html

"Chemical Backgrounder" April 28, 2000 http://www.nsc.org/ehc/ew/chems/ddt.htm