TY  - BOOK
AU  - Pearl raymond
AU  - Clawson A B
TI  - Variation and correlation in the crayfish: with special reference to the influence of differentiation and homology of parts
U1  - 000SB:595.38413 
PY  - 1907///
CY  - Washington
PB  - Carnegie Inst
KW  - Correlation
KW  - Crayfish
KW  - Variation(Biology)
ER  -