00443nam a2200157Ia 450000500170000000800460001703700120006304000210007504100130009608400210010910000220013024500420015226000560019430000140025070000210026420250508150858.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDL bengcFEDL  aeng2eng  a371.7, WHEqFEDL  aWheatley George M 0aHealth observation of school children  aNew York, USAbMcGraw Hill Book Company Inc. c1951  axvii,491p  a Hallock Grace T