00510nam a2200169Ia 450000500170000000800460001703700120006304000200007504100130009508400210010810000250012924500580015426000570021230000120026949000360028165000230031720250508161124.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDLbengcFEDL  aeng2eng  a371.3, KLAqFEDL  aKlausmeier Herbert J 0aPrinciples and practices of secondary school teaching  aNew York, USAbHarper and Brothers Publishers c1953  axv,521p  aExploration series in education  aTeaching Technique