TY - BOOK TI - Secondary education : basic principles and practices AU - Alexander, William M. (William Marvin) , 1912-1996. AU - Saylor, J. Galen (John Galen) , 1902-. PB - Rinehart PP - New York : Rinehart , [1950]. PY - 1950 UR - https://library.korea.ac.kr/detail/?cid=CAT000045596772&ctype=m