TY  - BOOK
AU  -  Ruchlis,Hy
TI  -  Teacher's manual for classroom laboratory : :  3 / 
U1  -  370.71 
PY  - 1966///
CY  -  New York : 
PB  -  Harcourt, Brac and World, Inc, 
KW  -  Laboratory schools
KW  -  Handbooks, manuals, etc
KW  -  Student teaching
KW  -  Activity programs in education
ER  -