TY  - BOOK
AU  - Cummins G B
AU  -  Gries G A
AU  -  Lefforge J H
TI  - Laboratory problems in plant science
U1  - I:f3, H81 
PY  - 1948///
CY  - Minneapolis
PB  - Burgess         
KW  -  Practical-Botany
KW  - Botany
ER  -