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HelstrÃöm, I. Orchid bees as bio-indicators for organic coffee farms in Costa Rica: : does farm size affect their abundance?

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HelstrÃöm, Ingemar. Orchid Bees As Bio-indicators for Organic Coffee Farms in Costa Rica: : Does Farm Size Affect Their Abundance?

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HelstrÃöm, Ingemar. Orchid Bees As Bio-indicators for Organic Coffee Farms in Costa Rica: : Does Farm Size Affect Their Abundance?