In memoriam Dr. Noel St. George Hyslop T.D., F.R.C.V.S., M.V.Sc., D.T.V.M. 1921–1979 W. C. D. Hare Announcement Pages: 1 - 2
Application of meteorological data to agroclimatological mapping E. Skaar OriginalPaper Pages: 3 - 12
Tundra plant structure and production in relation to the environment F. E. Wielgolaski OriginalPaper Pages: 23 - 30
Effect of hypoxia (6,060 m) and cold (−5°C) on sexual organs of male rabbits S. S. RiarM. S. MalhotraK. Shankar Bhat OriginalPaper Pages: 31 - 37
Photoperiod and fur lengths in the arctic fox (Alopex lagopus L.) L. S. UnderwoodPatricia Reynolds OriginalPaper Pages: 39 - 48
Temperature regulation in the mouse,Peromyscus leucopus: Effects of various photoperiods, pinealectomy and melatonin administration G. R. LynchJ. K. SullivanS. L. Gendler OriginalPaper Pages: 49 - 55
Photoperiod: Its importance as an impeller of pineal and seasonal reproductive rhythms R. J. Reiter OriginalPaper Pages: 57 - 63
Photoperiodic control of circadian activity rhythms in diurnal rodents K. R. KrammDeborah A. Kramm OriginalPaper Pages: 65 - 76
The non-photic induction of spermatogenic development in European starlings J. T. Rutledge OriginalPaper Pages: 77 - 81
Ahemeral light regimens test the photoperiodic threshold of the european starling(Sturnus vulgaris) R. G. Schwab OriginalPaper Pages: 83 - 88
The standardization of experimental investigations of biological effects of low frequency electric and magnetic fields H. Pfützner Erratum Pages: 88 - 88
In memoriam Dr. George Verfaillie 25 November 1925–22 February 1979 S. W. Tromp Announcement Pages: 89 - 90
Epidemic seasonal infertility — a hypothesis for the cause of seasonal variation of births T. MiuraM. Shimura OriginalPaper Pages: 91 - 95
Effects of a moderate sized city on human thermal bioclimate during clear winter nights S. E. Tuller OriginalPaper Pages: 97 - 106