TY  - BOOK
AU  - Clausen,Robert Theodore
TI  - Sedum of the trans-Mexican volcanic belt: : an exposition of taxono mic methods. / 
U1  - 583.38 CLA 
PY  - 1959///
CY  - London: 
PB  - Constable, 
KW  - Sedum
N1  -  Includes bibliography : p. [364]-368
ER  -