TY  - BOOK
AU  - Runquist, Olaf Allan.
AU  - Creswell,Clifford J.
AU  - Head,J.Thomas
TI  - Chemical principles: a programmed text 
PY  - 1968///
CY  - Minneapolis
PB  - Burgess Pub. Co.
KW  - Chemistry
KW  - Programmed instruction
ER  -