There are two versions of this booklet, with minor discrepancies.
Blue version:
front cover is blue and reads Contiene due grandi tavole con schemi “Contains two large tables with diagrams”
the booklet itself is 20 pages, and like the cover says, contains separate sheets with the patterns
contains fig. 15 (page 7) - a large tablecloth with blocky flowers - not seen in the orange version
does not include Arnika, Tramezzo, or the edging on the back cover of the orange version
the back cover pictures two designs (figs. 42 & 43) which are not actually included with the pattern sheet.
Orange version:
front cover is orange and reads 50 modelli completi di istruzioni e schemi “50 models complete with instructions and diagrams” (I can only find evidence of ~42 models!)
the booklet itself is 40 pages, with the charts printed on pages 19-37 (i.e. there is no separate pattern sheet)
contains fig. 15: Tramezzoand fig. 15A: Arnika (page 7), not seen in the blue version
the back cover pictures an edging which inside the booklet is labelled “fig 42”, also not in the blue version
does not include the large tablecloth with blocky flowers seen on page 7 of the blue version.
there is no mention of the two designs on the back cover of the blue booklet.
To sum up: Despite the format differences, the patterns included are almost entirely the same except that the orange version includes 2 additional edgings and Arnika while the blue version has the blocky-flower-tablecloth instead.