.245
a	Systematics and evolution of phacops rana ( Green, 1832) and phacops iowensis delo, 1935 (Trilobita) from the middle devonian of north American
h	Book
.250
a	Bulletin of the American Museum of natural History
.100
a	ELDREDGE,Niles
.005
a	20071119153144
.260
a	New York
b	The American Museum of natural history
c	1972
.084
a	560.172 ELD
.300
a	113 hlm.: gamb.
b	28 cm.
c	113 hlm.: gamb.; 28 cm.
.336
a	Book