TY  - BOOK
AU  - Bernstein ,Ruth  .
AU  - Bernstein ,Stephen   .
TI  - Schaums 3000 solved problems in biology / 
SN  - 0070050228
U1  - 574.076 
PY  - 1989///
CY  - New York : 
PB  - McGraw-Hill , 
KW  - BIOLOGY - PROBLEMS
N1  - NULL
ER  -