Pyrethrum the natural insecticide
Symposium on Pyrethrum, the Natural Insecticide1972University of Minnesota.
Casida, John Edward.
New York London Academic Press
1973
'... in August, 1972 ... the "Symposium on Pyrethrum, the Natural Insecticide" was held' - text
Includes bibliographies and index
Pyrethrum (Insecticide)