1.
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Pattern tasks: thinking processes used by 6th grade students Barbosa,Ana - Vale,Isabel - Palhares,Pedro
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2.
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Conditional probability problems in textbooks an example from Spain Lonjedo Vicent,M. Ángeles - Huerta Palau,M. Pedro - Carles Fariña,Marta
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3.
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José Luis Cuevas and the "New" Latin American Artist Fulton,Christopher
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4.
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Working towards algebra: the importance of relational thinking Stephens,Max - Ribeiro,Alessandro
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5.
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Polycyclic aromatic hydrocarbons in soils from a brick manufacturing location in central Mexico BARRÁN-BERDÓN,Ana Lilia - GARCÍA GONZÁLEZ,Virgilio - PEDRAZA ABOYTES,Gustavo - RODEA-PALOMARES,Ismael - CARRILLO-CHÁVEZ,Alejandro - GÓMEZ-RUIZ,Humberto - VERDUZCO CUÉLLAR,Beatriz
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6.
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Total phenolic compounds, flavonoids and antioxidant activity in the flowers of Crataegus spp. from México García-Mateos,Rosario - Aguilar-Santelises,Leonor - Soto-Hernández,Marcos - Nieto-Angel,Raúl - Kite,Geoffrey
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7.
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Dr. Estela Sánchez Quintanar Loyola-Vargas,Víctor M.
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8.
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Preface Raga,Graciela B.
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9.
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Editorial Gelbukh,Alexander
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10.
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Preface Belyaeva,Tatyana - Bijker,Roelof - Martínez-Quiroz,Enrique
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