TY  - BOOK
AU  - Stewart, Helen.
CN  - QE75
CN  - QE75
CY  - Washington :
DA  - 1956.
ID  - 68148
KW  - Corals.
N1  - "A guide for the differentiation of early Plaeozoic faunules."
PB  - U.S. G.P.O.,
PP  - Washington :
PY  - 1956.
T1  - Ordovician and Silurian coral faunas of western United States /
TI  - Ordovician and Silurian coral faunas of western United States /
ER  -