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  1. Le nouveau malthusianisme au point de vue des véritables problèmes de population mondiaux.G. H. Knibbs - 1926 - Scientia 20 (40):140.
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  2. Les problèmes de la population, de l'approvisionnement et de la migration.G. H. Knibbs - 1919 - Scientia 13 (26):du Supplém. 150.
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  3. PLUMMER, H. C. - An introductory treatise on dynamical Astronomy.G. H. Knibbs - 1919 - Scientia 13 (26):150.
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  4. Problèmes mondiaux de population. IIe Partie: Conditions du maximum possible de population mondiale.G. H. Knibbs - 1925 - Scientia 19 (38):130.
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  5. Problèmes mondiaux de population. Ie Partie: La capacité de population du Globe.G. H. Knibbs - 1925 - Scientia 19 (38):98.
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  6. The New Malthusianism in the light of actual world problems of population.G. H. Knibbs - 1926 - Scientia 20 (40):379.
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  7. The problems of population, food supply and migration.G. H. Knibbs - 1919 - Scientia 13 (26):485.
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  8. The world-problems of population. First part: The population capacity of the earth.G. H. Knibbs - 1925 - Scientia 19 (38):249.
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  9. The world-problems of population. Second part: The conditions for the maximum possible world's population.G. H. Knibbs - 1925 - Scientia 19 (38):329.
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  10.  7
    Waste.G. H. Knibbs - 1923 - Australasian Journal of Philosophy 1 (3):162 – 173.
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  11.  2
    Waste.G. H. Knibbs - 1923 - Australasian Journal of Psychology and Philosophy 1 (3):162-173.
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