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41.
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42.
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47.
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48.
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49.
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Ciencias Naturales: Segundo curso / Por Raúl Faréz J. by Fárez J., Raúl [Autor(a)]. Material type:  Text; Format:
print
; Literary form:
Not fiction
Language: Spanish Publisher: Cuenca: Don Bosco, 1975Availability: Items available for loan: Campus CentralCall number: 500.71 F224 (2).
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51.
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Ciencias 4to: estudio de la naturaleza Por Luis Rey by Rey, Luis. Material type: Text; Format:
print
; Literary form:
Not fiction
Language: Spanish Publisher: Madrid Ediciones y distribuciones CODICE, S.A. 1982Availability: Items available for loan: Campus CentralCall number: 500.71 R3301 (1).
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52.
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Ciencias: estudio de la naturaleza 6º Por Luis Rey by Rey, Luis. Material type: Text; Format:
print
; Literary form:
Not fiction
Language: Spanish Publisher: Madrid Cultura Centroamericana, S.A. 1981Availability: Items available for loan: Campus CentralCall number: 500.71 R3301 (1).
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53.
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Ciencia y vida Por Segundo Villacís [y 2 más] by Villacís Vaca, Segundo | Tamayo, Mariano | López E., Guido. Edition: Primera ediciónMaterial type: Text Language: Spanish Publisher: Quito Ministerio de Educación Pública 1975Availability: Items available for loan: Campus CentralCall number: 500.71 V7115 (2).
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54.
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Ciencias de la Naturaleza 4 Por Victor M. Valecillo by Valecillo, Victor M. Material type: Text; Format:
print
; Literary form:
Not fiction
Language: Spanish Publisher: Madrid Belloso Rossell 1986Availability: Items available for loan: Campus CentralCall number: 500.71 V2342 (1).
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55.
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56.
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57.
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58.
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60.
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Ciencias para maestros: Por Jorge Ratto primera parte by Ratto, Jorge. Edition: Segunda ediciónMaterial type: Text; Format:
print
; Literary form:
Not fiction
Language: Spanish Publisher: Buenos Aires Marymar Ediciones 1978Availability: Items available for loan: Campus CentralCall number: 372.357 R1897 (2).
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