Field trip guidebooks two through fifteen :
volume one : compiled and reprinted /
Geological Society of Iowa.

APA Citation

Geological Society of Iowa. (1984). Field trip guidebooks two through fifteen: volume one : compiled and reprinted. [Iowa City, Iowa]: Geological Society of Iowa.

MLA Citation

Geological Society of Iowa. Field Trip Guidebooks Two Through Fifteen: Volume One : Compiled And Reprinted. [Iowa City, Iowa]: Geological Society of Iowa, 1984.

Warning: These citations may not always be complete (especially for serials).