TY  - BOOK
AU  - Humphrey,Donald G.
AU  - Dyke,Henry Van
AU  - 
TI  - Student guide with programed units for life
U1  - 570 H926 1969 
PY  - 1969///
CY  - New York
PB  - Harcourt, Brace & World, Inc.
KW  - Biology
N1  - Includes index
ER  -