RT Journal Article SR Electronic T1 Physique and Development of Boys and Girls from Different Types of School JF British Journal of Preventive & Social Medicine JO Br J Prev Soc Med FD BMJ Publishing Group Ltd SP 231 OP 239 DO 10.1136/jech.7.4.231 VO 7 IS 4 A1 W. H. Hammond YR 1953 UL http://jech.bmj.com/content/7/4/231.abstract AB