00475nam a2200145Ia 450000500170000000800460001703700120006304000200007504100130009508400190010810000190012724501240014626000440027030000150031420250508161630.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a507, HOWqFEDL  aHowes Virgil M 0aIndividualizing instruction in science and mathematics: Selected readings on programs, prctices, and uses of technology  aLondon, UKbThe Macmillan Companyc1970  aviii,204p.