1. Effects of cool irrigation on rice growth and yield. (In Japanese.);Enomoto N.;Agriculture,1936
2. Evaluation of the risk for cool weather damage at the different regions in Hokkaido, Japan. (In Japanese.);Fujiwara T.;Hokunou,1966
3. The stabilities of temperature and rice yield during the cultivation period in Hokkaido. Part 1. The critical conditions of temperature for the safe cultivation of paddy rice;Hanyu J.;Res. Bull. Hokkaido Natl. Agric. Exp. Stn.,1971
4. The increase in stability of crop production in Hokkaido;Hoshino T.;Res. Bull. Hokkaido Natl. Agric. Exp. Stn.,1960