References
1.Eikichi Hiratsuka	(1961):	History of Modern Silkworm Race Breeding, The Dainippon Silk Foundation, Silk Science Research Institute, pp236
2.Eikichi Hiratsuka	(1969):	Genealogy of Japanese Silkworm Races for Practical Use, The Dainippon Silk Foundation, Silk Science Research Institute, pp335
3.Shimizu et al.	(1975):	Artificial feeding response of newly hatched larva in the silkworm stocks, Acta Sericologica, 97
4.Yamamoto et al.	(1985):	Racial specificity of several quantitative characters in the silkworm stocks (1), Technical Bulletin of Sericultural Experiment Station, 118
5.Enokijima et al.	(1985):	Racial specificity of several quantitative characters in the silkworm stocks (2), Technical Bulletin of Sericultural Experiment Station, 120
6.Enokijima et al.	(1985):	Racial specificity of several quantitative characters in the silkworm stocks (3), Technical Bulletin of Sericultural Experiment Station, 124
7.Yamamoto et al.	(1986):	Racial specificity of several quantitative characters in the silkworm stocks (4), Technical Bulletin of Sericultural Experiment Station, 129
8.Shibukawa et al.	(1986):	Studies on the cocoon quality of the silkworm stock cultures of the Sericultural Experiment Station, Technical Bulletin of Sericultural Experiment Station,129
9.Sorita et al.	(1991):	Preservation and utilization of genetic resources of silkworm, National Institute of Sericultural and Entomological Science, pp68
10.Yasuo Hirata	(1991):	The Silkworm Egg Races improved by the Sericultural Experiment Station of Japan, Misc. Publ. National Institute of Sericultural and Entomological Science (8), p23-87
11.Kosegawa et al.	(2000):	Induction of non-diapause egg by dark and low temperature incubation in local variety of the silkworm, Bombyx mori, J.Seric.Sci.Jpn, 69(6)