Nygaard, Niels <br/><br/>
On the number of point on unirational 3-folds 
Niels Nygaard 
 - Aarhus  Universitet Aarhus  1974 /75 
 - 12p  20 cm 
 - Preprint series  21 .
<br/><br/> Lucrarea este multigrafiata