TitlePublisherAuthorsSubjects
The how and why book of primitive manGrosset and Dunlap
    WeatherGrosset and Dunlap
      Basic inventionsGrosset and Dunlap
        EgologyGrosset and Dunlap
        The how and why wonder book of boats and shipsGrosset and Dunlap
          Meanwhile, back at the castleGrosset and Dunlap
          Fra AugeicoGrosset and Dunlap
            BoschGrosset and Dunlap
              Leonardo DavanciGrosset and Dunlap
                Drawing DogsGrosset and Dunlap
                  The ringmaster's secretGrosset and Dunlap
                    The Mystery of talling bellGrosset and Dunlap
                      The clue in the old albumGrosset and Dunlap
                        Nancy's Mysterious letterGrosset and Dunlap
                        The how and why wonder book of Electricity.Grosset and Dunlap
                          Science experimentsGrosset and Dunlap
                            The how and why wonder book of beginning scienceGrosset and Dunlap

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