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	1.	No cover image available Philosophico-scientific problems by P. Henry van Laer Series: Duquesne studies: Philosophical series n \| ; 3 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Pittsburgh Duquesne University Press 1953 Availability: Items available for loan: JST Library (1)Call number: B 67.LAE. Place hold Add to cart (remove)
	2.	No cover image available Philosophy of science: part two: a study of the division and nature of various groups of sciences by P. Henry van Laer Series: Duquesne studies philosophical series n. 014 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Pittsburgh Duquesne University Press 1962 Availability: Items available for loan: JST Library (1)Call number: Q 175.LAE. Place hold Add to cart (remove)
	3.	No cover image available Philosophy of science: part one: Science in general by P. Henry van Laer Henry J. Koren CSSp Series: Duquesne studies philosophical series n. 006 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Pittsburgh Duquesne University Press 1956 Availability: Items available for loan: JST Library (1)Call number: Q 175.LAE. Place hold Add to cart (remove)

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