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1.
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Industrial Morale Pencavel, John
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Labor Supply, Hours Constraints and Job Mobility Paxson, Christina - Altonji, Joseph
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How Computers Have Changed the Wage Structure: Evidence From Microdata, 1984-89 Krueger, Alan B.
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4.
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Introgressive hybridization betwen Brahea dulcis X B. nitida (Arecaceae) complex in México: evidence from morphological and PCR-RAPD patterns Ramírez Rodríguez, R - Tovar Sánchez, E - Jiménez Ramírez, Jaime - Vega, FK - Rodríguez, V
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5.
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A revised check-list of the chromosome number in Vertebrata Oguma, Kan - Kakino, Sajiro
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6.
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Changes of position of nucleus Schuitze, Oskar Maximilian Sigismund
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7.
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Segmentation in axolotl Schuitze, Oskar Maximilian Sigismund
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8.
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An experimental study of the "barred" pigment pattern in Mexican axolotl larvae Lehman, Harvey Eugene
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9.
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Studies on the development of the ear of Amblystoma Norris, Henry Waldo
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10.
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The mechanism of cleavage in amphibian and sturgeon eggs Zotin, AI
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