TY  - BOOK
AU  - Makin, H.L.J  .
TI  - Mass spectra and GC data of steroids: androgens and estrogens / 
SN  - 3-527-29644-1
U1  - C5:31 
PY  - 1998///
CY  - Weinheim : 
PB  - Wiley-VCH , 
KW  - Steroids
ER  -