SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Polima
Mipango 7 inapatikana
Miradi (7)
The Plastic Blood Bag
na Mary
Polima
34
0
0
0
0
0
The Surgical Rubber Glove
na Mary
Polima
25
0
0
0
0
0
The Submarine Telegraph Cable
na Mary
Nyenzo
24
0
0
0
1
0
Photographic Film
na Mary
Polima
32
0
0
0
2
0
Hatari
Making Bakelite — The First Fully Synthetic Plastic That Launched the Age of Polymers
na Charlie
Plastic
35
0
0
0
1
0
Hatari
Making Celluloid — The First Synthetic Plastic That Changed Everything
na Charlie
Plastic
60
0
0
0
3
0
Vulcanizing Rubber with Sulfur — The Accidental Discovery That Put Tyres on the Road
na Charlie
Kemia
66
0
0
0
3
0