Benjamin Franklin Leonard / Donald Albert Brobst / Donald K. Leifeste / Geological Survey (U.S.) / James Alfred Calkins / Kathleen T. Iseri / Maurice V. Adams / Norman J. Page / T. Leslie Youd / Wallace R. Hansen / John C. Dohrenwend / Olaf Kays / Walden P. Pratt / Walter Basil Langbein / Eleanor K. Keefer / Vincent Ellis McKelvey

OSU:32435030456016

CRIB (Information retrieval system)

James Alfred Calkins / Olaf Kays / Eleanor K. Keefer

SRLF:DD0000168146

CRIB (Information retrieval system)

Mary E. Graziani / Olaf Kays / Geological Survey (U.S.). National Mapping Division

OCLC:14137606

Cataloging

James Alfred Calkins / Olaf Kays / Eleanor K. Keefer

OCLC:979996439

CRIB (Information retrieval system)

D. W. Moody / Olaf Kays / Geological Survey (U.S.)

OCLC:46961805

GIPSY (Information retrieval system)

James Alfred Calkins / Olaf Kays / Eleanor K. Keefer

OCLC:251898045

James A. Calkins / Olaf Kays / Eleanor K. Keefer

OCLC:45927479

Benjamin Franklin Leonard / E. R. German / James Alfred Calkins / Alfred L. Knight / Olaf Kays / Eleanor K. Keefer

LCCN:73603301

CRIB (Information retrieval system)

Olaf Ladousse

OCLC:1153350606

James A. | Kays Calkins (Olaf)

OCLC:1331096629

Olaf Asteson

OCLC:316163028

Olaf Ruhen

OCLC:1067338110

Olaf ASTASON

OCLC:557221740

St. Olaf College

OCLC:44996587

College students

Carl Barks / Bill Walsh / Olaf Solstrand / Noel Van Horn / Frank Jonker / Remco Polman / Vic Lockman

1603601147 / 9781603601146