Columbia subject headings:
Morus cathayana--History.
Mulberry--Guatemala--History.
Sericulture--Guatemala--History.
Harvard subject headings:
Morus cathayana--History.
Mulberry--Guatemala--History.
Sericulture--Guatemala--History.
Princeton subject headings:
Morus cathayana--History.
Mulberry--Guatemala--History.
Sericulture--Guatemala--History.