00407nam a2200133 a 450000500170000000800410001705000180005824500370007626000560011350000230016965000250019265000290021765000270024620140412111331.0030221s19uu    xx            00    eng d  aKITbABO 1989  aAbout time clocks and calendars.  aU. S. A :bDevelopmental Learning Materials,c1982.  aw/ teachers manual  aTime--Teaching cards  aCalendar--Teaching cards  aClocks--Teaching cards