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Issue 1-2
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Front matter
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Table of Contents
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Miscellaneous
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Association News: Rapport annuel du président pour l'année 1988
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1
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Article: Menschen und Spinnen
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5
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Article: Développement des moteurs de locomotive et de leur commande (spécialement aux CFF)
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17
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Article: Bemerkungen zur schwingenden Saite und ihrer Simulation
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19
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Article: Les énergies renouvelables dans tous les cas et dès maintenant
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30
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Rubric: Le Musée d'histoire naturelle de Fribourg
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37
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Rubric: Rapport de la Ligue fribourgeoise pour la protection de la nature
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46
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Rubric: Rapport de la Commission cantonale pour la protection de la nature et du paysage
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52
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Article: Autökologische und enzymelektrophoretische Untersuchungen an zwei "Ecdyonurus venosus-" Populationen : Ephemeroptera, Heptageniidae
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55
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Front matter
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55
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Table of Contents
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55
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Chapter 1: Einleitung
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56
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Chapter 2: Autökologische Untersuchungen
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57
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Chapter 3: Enzymelektrophoretische Untersuchungen
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116
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Chapter 4: Dank
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124
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Chapter 5: Zusammenfassung = Résumé = Summary
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124
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Bibliography
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126
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Article: Quantitative ecological studies on "Ephemerella ignita" (PODA) (Ephemeroptera, Insecta) in a Prealpine stream
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130
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Article: L'ultrahelvétique inférieur en Suisse occidentale
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143
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Article: Considérations sur le Musée d'histoire naturelle de Fribourg (1823 - 1927)
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153
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Rubric: Das meteorologische Jahr
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174
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Miscellaneous
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Back matter
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