00761cam a22002291 4500001001300000003000400013005001700017008004100034010001700075035001900092040006000111042001200171050001600183082001000199110008700209245002700296260005300323300001700376440007600393650004500469999001700514e 40000651 DLC20260227111229.0800401m19391941enk 000 0 eng c ae 40000651  a(OCoLC)6157165 aU.S. Office of Education. Library.cTxBeaLdTxBeaLdDLC apremarc00aQA135b.S38 a372.72 aScottish Council for Research in Education.bCommittee on Primary School Subjects.10aStudies in arithmetic. aLondon,bUniversity of London Pressc[1939-1941] a2 v.c23 cm. 0aPublications of the Scottish Council for Research in Education,v13, 18 0aArithmeticxStudy and teaching (Primary) c21742d21742