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	1.	Il mistero del castello fantasma / Ron Roy ; traduzione di Alessandra Petrelli ; illustrazioni di John Steven Gurney. by Roy, Ron, (1940) [aut] Petrelli, Alessandra, (1965- ) [aut] Gurney, John Steven [aut] Material type: Text Language: Italian Publication details: Casale Monferrato : Piemme junior, 2002 Availability: Items available for reference: RAVENNA \| Arcigay Ravenna LGBTI+: Not for loan (1)Call number: 813.54 ROY MIS.
	2.	No cover image available Il mistero del tesoro sommerso / Ron Roy ; traduzione di Alessandra Petrelli ; illustrazioni di John Steven Gurney. by Roy, Ron, (1940) [aut] Petrelli, Alessandra, (1965- ) [trl] Gurney, John Steven [ill] Series: Il battello a vapore. Piccoli investigatori ; 4 Material type: Text Language: Italian Publication details: Casale Monferrato : Piemme junior, 2002 Availability: Items available for reference: RAVENNA \| Arcigay Ravenna LGBTI+: Not for loan (1)Call number: 813.54 ROY MIS.
	3.	Il mistero della mummia scomparsa / Ron Roy ; traduzione di Alessandra Petrelli ; illustrazioni di John Steven Gurney. by Roy, Ron, (1940) [aut] Petrelli, Alessandra, (1965- ) [trl] Gurney, John Steven [ill] Series: Il battello a vapore. Piccoli investigatori ; 2 Material type: Text Language: Italian Publication details: Casale Monferrato : Piemme junior, 2002 Availability: Items available for reference: RAVENNA \| Arcigay Ravenna LGBTI+: Not for loan (1)Call number: 813.54 ROY MIS.
	4.	Popcorn a colazione by Cunningham, Laura Petrelli, Alessandra (traduzione di) Material type: Text; Format: print ; Literary form: Not fiction Publication details: Milano Sperling & Kupfer 2003 Availability: Items available for reference: GENOVA \| Arcigay Genova - Approdo Lilia Mulas A.P.S.: Not for loan (1)Call number: 813.5 CUN POP.