Vol. 27 No. 104 (2003)

Published September 29, 2003

Full Issue

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Physical Sciences

Rubén A. Vargas

369 - 380

PILASES AND PHASC TRANSITIONS IN CONDENSED MATTER

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Hernando Ariza Calderón

357 - 368

MANUFACTURE AND OPTICAL CHARACTCRIZATION OF SEMICONDUCTOR MATERIALS FOR USE IN OPTOELE~TRONICS

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Natural Sciences

Patricia Chacón de Ulloa

441 - 447

REPRODUCTIVE BIOLOGY OF WASMANNIA AUROPUNCTATA (R.) (HYMENOPTERA: FORMICIDAE)

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John D. Lynch

449 - 460

NEW SPECIES OF FROGS (ELEUTHERODACTYLUS: LEPTODACTYLIDAE) FROM THE CORDILLERA ORIENTAL OF NORTE DE SANTANDER AND SANTANDER, COLOMBIA

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José Vicente Rueda-Almonacid , John D. Lynch, Pedro A. Galvis

461 - 466

A NEW SPECIES OF AMPHIBIAN (ANURA: LEPTODACTYLIDAE) FROM EDGE. SABANA DE BOGOTÁ. COLOMBIA

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Chemical Sciences

Luis Fernando Echeverri López

424 - 439

CHRMISTRY OF NATURAL PRODUCTS AS A SOURCE OF BIOLOGIRALLY ACTIVE MOLECULES

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Earth Sciences

Carlos A. Flórez, Andrés Etter

343 - 356

ECOLOGICAL CHARACTERIZATION OF MÚCURA AND TINTIPÁN ISLANDS. SAN BERNARDO ARCHIPELAGO. COLOMBIA

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Dimas Malagón Castro

319 - 342

ESSAY ON THC TYPOLOGY OF COLOMBIAN SOILS - WITH EMPHASIS IN ORIGENS AND ENVIRONMENTAL ASPECTS

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Mathematics

Jairo A. Charris, Bernarda H. Aldana, Germán Preciado

381 - 421

ON THE RECUNRRENCE RELATIONS, THE CONTINUED FRACTIONS AND THE DETERMINATION OF THE SPECTRAL PROPERTIES OF ORTHOGONAL POLYNOMIALS

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