@book{42a339c2e3724e428c97b2e009edd5f8,
title = "Petiole length reaction in Hyoscyamus niger upon daylength extension with light of narrow spectral regions as correlated with the length of the basic light period, and upon night interruption with red and infrared radiations",
keywords = "hyoscyamus niger, petiolen, fotoperiode, hyoscyamus niger, petioles, photoperiod",
author = "E.C. Wassink and W. Sytsema",
year = "1958",
language = "English",
series = "Mededelingen / Landbouwhogeschool Wageningen",
publisher = "Veenman",
number = "58 (7)",
}