Grønvold, J. (1990). Transmission of infective larvae of Ostertagia ostertagi and Cooperia oncophora (Trichostrongylidae: Nematoda): Thesis. Commissioned by DSR Booksellers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Grønvold, Jørn. Transmission of Infective Larvae of Ostertagia Ostertagi and Cooperia Oncophora (Trichostrongylidae: Nematoda): Thesis. Frederiksberg C, Denmark: Commissioned by DSR Booksellers, 1990.
Παραπομπή σε μορφή MLA (8th εκδ.)Grønvold, Jørn. Transmission of Infective Larvae of Ostertagia Ostertagi and Cooperia Oncophora (Trichostrongylidae: Nematoda): Thesis. Commissioned by DSR Booksellers, 1990.
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