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Latvia in the making, 1918-1928
1928
Bīlmanis, Alfrēds
National Agricultural Library - United States of America
Latvian political economy
1928
Zalts, Alberts
National Agricultural Library - United States of America
Der Kleebau in Alt-Lettland
1928
Mazversits, J.
National Agricultural Library - United States of America
Ein Beitrag zur Kenntnis der Aphidenfauna Lettlands
1928
Opmanis, K.
National Agricultural Library - United States of America
