Modeling heterogeneity in production models: empirical evidence from individual farming in Poland [PDF]
This discussion paper deals with the estimation of a random coefficient model. The virtue of this approach is that it considers firm heterogeneity, which conventional SFA models do not.
Goraj, Lech +2 more
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Diversas sociedades americanas prehispánicas han utilizado el tabaco (Nicotiana spp.) en contextos sagrados, medicinales o recreativos. Las especies de Nicotiana contienen nicotina, alcaloide que es ingerido al fumar, masticar o inhalar la planta. El uso
Kathy Collao-Alvarado +2 more
doaj +1 more source
Biochemical and cytological studies of genetic transfer from the Mv genome of Aegilops ventricosa into hexaploid wheat [PDF]
A double interspecific oross {Triticum turgidum (AB) var. rubroatrum H-l-1 x Ae. ventvicosa (DM°) AP-l} x T.aestivum (ABD) cv. Almatense H-10-1S was carried out in 1950 by M.
Delibes Castro, Angeles +2 more
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Morphology and tructure of the pollen cone and pollen grain of the Araucaria species from Argentina [PDF]
The pollen cone and the pollen grain of the two Argentinean species of Araucaria are described with LM, SEM and TEM. Primordia of pollen cones are formed in April and May and reach maturity by mid-October in A. angustifolia (Bert.) O.
Caccavari, Marta Alicia +2 more
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Moren Set Göllerinde Güncel Polen Dağılımı: Eğri Göl ve Çevresi (Geyik Dağları - Antalya)
Yosun ve göl yüzey örnekleri, hem günümüzdeki polen dağılımı ile iklim değişkenleri arasındaki ilişkiyi anlamaya hem de polen ve bitki örtüsü dağılımının, fosil polen kayıtlarının yorumlanmasında bir karşılaştırma modeli olarak kullanılmasına olanak ...
Gülan Güngör +3 more
doaj +1 more source
Oncosperma Tigillarium Merupakan Bagian Palino Karakter Delta Plain di Delta Mahakam, Kalimantan [PDF]
Delta Mahakam adalah salah satu delta terkenal sebagai penghasil minyak bumi. Delta ini termasuk tipecampuran yang dipengaruhi proses sungai dan pasang surut. Enam puluh sampel diambil dari delta plaindan delta front telah dianalisis.
Rahardjo, A. (AT) +2 more
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Epigeic spiders of the pastures of northern Wielkopolska [PDF]
The fauna of epigeic spiders (Araneae) occurring on three different types of pastures in northern Wielkopolska was analysed. Studies were conducted from May 1992 to October 1993.
Szymkowiak, Paweł, Woźny, Marek
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Arbeidsmigratie in vieren. Bulgaren en Roemenen vergeleken met Polen. [PDF]
In januari 2007 traden Bulgarije en Roemenie toe tot de Europese Unie (EU). De toetreding van beide landen leidde tot een toename van het aantal Bulgaren en Roemenen in Nederland.
Engbersen, G.B.M. (Godfried) +4 more
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Die karitative Tätigkeit der katholischen Kirche im Schatten des Kommunismus in der VR Polen
Charitable Activities in the Shadow of the Communist System in the People’s Republic of Poland: In addition to liturgy and preaching, charity is one of the most important tasks of the Church.
Robert J. Biel
doaj
Directions in research of the oldest Polish press (1501–1729) [PDF]
This article contains a brief overview of the research on Polish press from the years 1501–1729, and discusses its directions and results conducted by historians and press experts after 1945.
Kolasa, Władysław Marek
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