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[A scientist studies the composition of an unknown substance by paper chromatography]

Format:
Still image
Copyright:
The National Library of Medicine believes this item to be in the public domain. (More information)
Extent:
1 photoprint.
NLM Unique ID:
101440832 (See catalog record)
NLM Image ID:
A014450
Format:
Still image
Copyright:
The National Library of Medicine believes this item to be in the public domain. (More information)
Extent:
1 photoprint.
NLM Unique ID:
101440832 (See catalog record)
NLM Image ID:
A014450