"Primary productivity" . . "Miljøfaktorer" . . "Lærebog" . . "IBP Synthesis Meeting on the Functioning of Photosynthetic Systems in Different Environments, Aberystwyth, Wales, 1973." . . . "Fotosyntese" . . . . . . . . "Photosynthesis and productivity in different environments" . . . "Photosynthesis and productivity in different environments : [IBP Synthesis Meeting on the Functioning of Photosynthetic Systems in - Different Environments held in Aberystwyth, Wales, UK in April 1973]" . . . . . "Photosynthesis and Productivity in Different Environments" . . . . . . . . . "Primary production in terstrial ecosystems; Primary production in aquatic ecosystems; Distribution of radiant energy and CO2 in relation to community structure and stratification; Photosynthetic activity of individual plants and tissues; Use of assimilates for maintenance, growth and development; Influence of stress factors and the use of assimilates; Actual and potential production in photosynthetic systems." . . . "Conference papers and proceedings" . . "Primary production in terrestrial ecosystems. Primary production in aquatic ecosystems. Distribution of radiant energy and CO2 in relation to community structure and stratification. Photosynthetic activity of individual plants and tissues. Use of assimilates for maintenance, growth and development. Influence of strees factors and the use of assimilates. Actual and potencial production in photosynthetic systems." . . . . . . . "Conference proceedings" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Textbook" . . . . "Ecosystems" . . "Photosynthesis Congresses." . . "Photosynthesis Congresses" . "Photosynthesis" . . "Photosynthesis." . "Planteproduktion" . . "Kongres" . . "Produktivität." . . "Produkcja pierwotna (biologia) konferencje." . . "Productivité primaire (Biologie) Congrès." . . "Productivité primaire (biologie) Congrès." . "Productivité primaire (Biologie) - Congrès." . "Anatomi Fysiologi Morfologi Biologi" . . "Anatomi Fysiologi Morfologi Biologi." . "Photosynthese." . . "Plantefysiologi" . . "Congress" . . "Congressi - Aberystwyth - 1973." . . "Fotosíntesis." . . "Plantenecologie. Plantensociologie." . . "Photosynthèse Congrès." . . "Photosynthèse - Congrès." . "Piante - Distribuzione geografica - Aspetti fisiologici - Congressi - 1973." . . "Fotosynteza konferencje." . . "Primary productivity (Biology) Congresses." . . "Primary productivity (Biology) Congresses" . "Primær produktivitet (planter)" . . "IBP Synthesis Meeting on the Functioning of Photosynthetic Systems in Different Environments (1973 : Aberystwyth, Wales)" . . . "Fytochemie. Plantenbiochemie." . . "Plant production" . . "Økosystemer" . . "Environmental factors" . . "Fotosintesi clorofilliana - Congressi - 1973." . . "Environments." . . "Plant physiology" . . "Primary productivity (Biology)" . . "IBP Synthesis Meeting on the Functioning of Photosynthetic Systems in Different Environments (1973 : Aberystwyth)" . . . "Productivity." . .