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- Kredel, Frederick E. (Frederick Evert), 1903-1961[remove]7
- Smithy, Horace Gilbert, 1914-19484
- Medicine--Research3
- X-rays.3
- Animals--Guyana--Photographs1
- Bodies of water--Guyana--Photographs1
- Bradypus tridactylus--Guyana--Research1
- Expeditions1
- Guyana--Description and travel1
- Guyana--Research1
- Kredel, Frederick E. (Frederick Evert), 1903-1962--Death and burial1
- Medicine--Bibliography1
- Medicine--Research.1
- Medicine--bibliography1
- Plants--Guyana--Photographs1
- Research1
- Scrapbooks--Guyana1
- Sloths--Guyana--Research1
- Surgeons--Biography1
- Surgeons--Obituaries1