na INLIS000000000003001 Ind 0010-1118003001 Assesment of fertilizer nitrogen requirement of potatoes and sugar beet NEETESON, J.J. J.J. Neeteson Wageningen International Agrarisch Centrum 1989 41 p. : ill. ; 20 cm. 41 p. : ill. ; 20 cm. 635.21-184NEEa Thesis (Dr.)-Landbouwhogeschool te Wageningen, 1989. 635.21-184 POTATOES NITROGEN FERTILIZERS SUGAR BEET NITROGEN FERTILIZERS 1372/DTS/89-mfn4684