1=11,3/4; 2=13,2/3; 3=15,3/4; 4=17,3/4; 5=19,3/4; 6=21,2/3; 7=23,3/4; 8=24,3/4; 9=25,3/4; 10=28,1/2-3/4; 11,1=30,3/4; 11,2=31,1/2; 12,1-2=34,1/2-3/4; 13,1=36,1/2; 13,2=36,3/4; 14,1=38,1/2; 14,2=38,3/4; 15,1-2=40,1/2-3/4; 16,1=42,1/2; 16,2=42,3/4; 17,1=44,1/2; 17,2=44,3/4; 18,1=46,1/2; 18,2=46,3/4; 19,1=48,1/2; 19,2=48,3/4; 26=62; 27=64; 28=66; 29=68,1/4 von: The serials librarian (ISSN: 0361-526X)