Griswold, G. A study of the oyster-shell scale, Lepidosaphes ulmi (L.), and one of its parasites, Aphelinus mytilaspidis Le B.. Ithaca: 1925 67 p. : ill., tab.
Griswold, G. A study of the oyster-shell scale, Lepidosaphes ulmi (L.), and one of its parasites, Aphelinus mytilaspidis Le B.. Ithaca: 1925 67 p. : ill., tab.
Griswold, G. (1925) A study of the oyster-shell scale, Lepidosaphes ulmi (L.), and one of its parasites, Aphelinus mytilaspidis Le B., Ithaca: 67 p. : ill., tab.
Griswold, G. (1925). A study of the oyster-shell scale, Lepidosaphes ulmi (L.), and one of its parasites, Aphelinus mytilaspidis Le B.. Ithaca: 67 p. : ill., tab.
Griswold G. A study of the oyster-shell scale, Lepidosaphes ulmi (L.), and one of its parasites, Aphelinus mytilaspidis Le B.. Ithaca: 1925. p. 67 p. : ill., tab.