Items where Year is 1977
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Thesis
Dijkstra, L. and Dijkstra-de Vlieger, R. (1977) Voedseloecologie van de Rotgans. Master's Thesis / Essay, Biology.
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Dijkstra, L. and Dijkstra-de Vlieger, R. (1977) Voedseloecologie van de Rotgans. Master's Thesis / Essay, Biology.