Budworm battles : the fight to stop the aerial insecticide spraying of the forests of eastern Canada / by Elizabeth May.

by May, Elizabeth.
Tantallon, N.S. : Four East Publications Limited, 1982.

At the cutting edge : the crisis of Canada's forests / Elizabeth May - Rev. ed.

by May, Elizabeth
Toronto, ON : Key Porter Books, 2005

At the cutting edge : the crisis of Canada's forests

by May, Elizabeth
: KEY PORTER BOOKS, 1998

Putting budworm loss in perspective / Elizabeth May

by May, Elizabeth
[s.l.] : [s.n.], [1983].