title: Calculation of daylength.
authors.affiliation: Lawrence Livermore National Laboratory, Livermor, Ca 94551-0808, USA.
authors.forename: J S
authors.initials: JS
authors.lastname: Amthor
mesh_terms: D000465:Algorithms; D001699:Biometry; D017440:Photoperiod; D063245:Plant Development; D010944:Plants / Q000528:radiation effects; D012984:Software