土井 徹

Secular Changes in Mean Birth Weights in the Ten Largest Cities of Japan (Single Births, 1969-1989) 

Japanese Journal of Hygiene Vol. 42, No. 4, pp. 894-904 (in Japanese) (Oct. 1987)  

Mean Birth Weight as a Community Health Indicator and its Secular Changes ・・・ 

Japanese Journal of Public Health Vol. 30, No. 10, pp. 511-526 (in Japanese) (Oct. 1983)