Perhaps you should try some spelling variations:
"international psychological economics series" » "interaction psychological economics series", "international technological economics series", "intervention psychological economics series", "international psychological economic series", "international ecological economics series", "international psychological conflicts series"
"international political economic studies" » "international policy economic studies", "international political economy studies", "international ecological economics studies", "international political economic status"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("international political economic studies") or ("international psychological economics series"))~.
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