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The Breeding Bird Survey
作者
Chandler S. Robbins / Danny Bystrak / Paul H. Geissler
出版1986
ISBN
UIUC:30112075260239
主題
Bird populations
Effects of Forest Management Practices and Forest ...
作者
Paul R. Martin / Eastern Ontario Model Forest
出版Kemptville : Eastern Ontario Model Forest = Forét modèle de l'est de l'Ontario, 1994 [i.e. 1996], 1996
ISBN
MINN:31951D020273129
主題
Business & Economics
The North American Species of Forcipomyia, Subgenu...
作者
Paul G. Bystrak / Willis Wagner Wirth
出版1978
ISBN
UVA:X030378474
主題
Ceratopogonidae
Cotton Insect Populations
作者
Gene Namkoong / H. H. Neunzig / John Mark Kingsolver / Larry E. Salathe / Paul G. Bystrak / Robert Eaton Fye / Clarence D. Johnson / Willis Wagner Wirth
出版1978
ISBN
OCLC:4545770
主題
Beetles
The North American Species of Forcipomyia, Subgenu...
作者
Paul G. Bystrak / Willis Wagner Wirth / United States. Science and Education Administration
出版1978
ISBN
OCLC:1314925600
主題
Diptera