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	1.	No cover image available Numerically controlled methods of automatic plotting and draughting by Petrie, G Material type: Article; Format: print Language: Eng <The> cartographic journal: journal of the british cartographic society Déc, 1966, p. 60-73 : ill., graph. Availability: Items available for loan: Biblioteca IFEA (1)Call number: Geog12. Place hold
	2.	No cover image available Some impressions of photogrammetry and surveying in Poland by Petrie, G Material type: Article; Format: print Language: Eng Photogrammetric record 6(31), 1968, p. 104-107 Availability: Items available for loan: Biblioteca IFEA (1)Call number: GeolP-18. Place hold
	3.	No cover image available Photogrammetric measurements of the ice wastage and morphological changes near the casement glacier, Alaska by Petrie, G Price, Robert J Material type: Article; Format: print Language: Eng Canadian journal of earth sciences 3(6), 1966, p. 827-840: : ill., carte, 2 cartes h. t., tab. Availability: Items available for loan: Biblioteca IFEA (1)Call number: Am.GeolP-10. Place hold

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