@article{62646,
      author = {Blough, Glenn O. and Campbell, Marjorie H.},
      url = {http://library.usi.edu/record/62646},
      title = {Making and using classroom science materials in the  elementary school: apparatus, demonstrations, equipment,  experiments,},
      publisher = {Dryden Press},
      recid = {62646},
      pages = {229 p.},
      address = {[New York]},
      year = {1954},
}