Rev. investig. Altoandin.

Table of contents
Rev. investig. Altoandin. vol.21 no.4 Puno Oct./Dic. 2019

Editorial

	· Climate crisis and environmental sustainability perspective of 11,000 scientists Escobar Mamani, Fortunato · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

Original Article

	· *Production of in vitro embryos in vitro* a portable carbon dioxide incubator and viability in vivo post transfer to recipients cows** Pérez Durand, Manuel Guido; Quispe Villalta, Benicio; Perez Guerra, Uri Harold · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· Plant parasitic nematodes associated with the cultivation quinoa in the región Puno-Perú Lima-Medina, Israel; Bravo-Portocarrero, Rosario Ysabel; Mamani-Cano, Zheyla Danitza · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· Effect of compost and NPK on the levels of microorganisms and cadmium in soil and almond of cocoa Florida Rofner, Nelino; Paucar García, Hildauro Juan; Jacobo Salinas, Santos Severino; Escobar Mamani, Fortunato; Torres García, Jaime · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· Experimental research of a high efficiency natural convection double-flow solar air heater Quiñonez Choquecota, José · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· *Comparison of organoleptic quality of coffee (Coffea arabica* L.) in Puno - Peru and La Paz - Bolivia** Ramos Cotacallapa, Edwen; Lima-Medina, Israel; Cornejo-Condori, Grover B · abstract in English \| Spanish · text in Spanish · Spanish ( pdf )

	· Elaboration of a food mixture based on quinoa (Chenopodium quinoa Willd), cañihua (Chenopodium pallidicaule Aellen), barley (Hordeum vulgare L.) corn (Zea mays L.), bean (Vicia faba L.) and soybean (Glycine max L Merr) by cooking process - extrusion Aro Aro, Juan Marcos; Calsin Cutimbo, Marienela · text in Spanish · Spanish ( pdf )