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3. Relation entre I'intoxication provoquée par Bacillus thuringiensis Berliner et la consommation chez Pieris brassicae L;Burgerjon;Ann. Epiphyt,1962
4. Bioassaying an insect virus on leaves. II. The influence of certain factors associated with the larvae and the leaves;David;J. Invertebr. Pathol,1971
5. Probit Analysis;Finney,1952