na INLIS000000000009207 Ind 0010-1118009207 Attempt to analysis of the effect of light on stem elongation and flowering in Hyoscyamus niger L. LINT, P.J.A.L. de P.J.A.L. de Lint Wageningen H. Veenmanen Zonen 1960 59 p. : ill. ; 26 cm. 59 p. : ill. ; 26 cm. 581.14LINa Thesis(Doctor)-Landbouwhogeschool te Wageningen, 1960.-- Bibl.: p. 55-59 581.14 FLOWERING LIGHT 230/61-mfn10986