Contribution à l'étude de la cochenille rouge du poirier
Subtitle: (Epidiaspis Leperii Sign.) en Suisse.
Publisher: Le François
Published: 1949
Place of publication: Paris
Language: fre
Number of pages: 266
Subjects: Pear-scale.
Notes: Bibliography: p. 263-264.
Thèse--École polytechnique fédérale, Zurich.
Vita.
Summary also in German.