Poste Srpske is one of three postal agencies in Bosnia-Herzogovina, according to Wikipedia. This program is from a press release:

25 January
125 Years from the Birth of Diana Budisavljevic
Number of stamps: 1
Sheet: 8+1
Nominal value (BAM): 1.70

10 February
700 Years from the Death of the King Dragutin Nemanjic
Number of stamps: 1
8+1
Nominal value (BAM): 0.90

16 March
History
Number of stamps: 8
Sheet: 8+1
Nominal value (BAM): 8 x 0.90

29 April
EUROPA – Think Green
Number of stamps: 2
Sheet: 9 karnet
Nominal values (BAM): 1.50, 1.50, 6.00

16 May
European Protection of Nature
Number of stamps: 2
Sheet: 8+2
Nominal values (BAM): 0.90, 1.70

1 June
International Day of Children
Number of stamps: 1
Sheet: 8+1
Nominal value (BAM): 1.70

10 June
Football
Number of stamps: 1
Sheet: BLOCK
Nominal value (BAM): 5.10

7 July
Summer Sports
Number of stamps: 4
Sheet: BLOCK
Nominal value (BAM): 4 x 1.70

14 September
Endangered Species – Griffin Vulture
Number of stamps: 4
Sheet: BLOCK
Nominal values (BAM): 2 x 0.90, 2 x 1.70

26 October
Medicinal Mushrooms
Number of stamps: 4
Sheet: 16+9
Nominal value (BAM): 4 x 0.90

15 November
Ethnological Treasure
Number of stamps: 4
Sheet: 20+5
Nominal value (BAM): 4 x 0.90

1 December
Composers
Number of stamps: 3
Sheet: 12+4
Nominal value (BAM): 3 x 1.70

Forest Fruits (no details)

Freshwater Animals (no details)