1960 Automatic train brakes BDZ

€ 8⁰⁰ 
15⁶⁵ BGN

1

ended

ulpia-aurea (730)

The Caves in Bulgaria

€ 6⁵⁰ 
12⁷¹ BGN

1

ended

ulpia-aurea (730)

Code of Commercial Navigation

€ 1⁸⁰ 
3⁵² BGN

ended

ulpia-aurea (730)

Young friends of nature

€ 1⁴³ 
2⁸⁰ BGN

ended

ulpia-aurea (730)

Interpol

€ 1²⁸ 
2⁵⁰ BGN

ended

ulpia-aurea (730)

Chemistry Processes, apparatus and machines in chemical technology

€ 6¹⁴ 
12⁰¹ BGN

ended

ulpia-aurea (730)

Chemistry Laboratory Practice for Chemists

€ 7⁶⁷ 
15⁰⁰ BGN

ended

ulpia-aurea (730)

Gasoline economy

€ 1⁷⁹ 
3⁵⁰ BGN

ended

ulpia-aurea (730)

MOSKVITCH

€ 2⁴⁵ 
4⁷⁹ BGN

ended

ulpia-aurea (730)

Practical chemistry for everyone

€ 9²⁰ 
17⁹⁹ BGN

ended

ulpia-aurea (730)

Social stratification in Bulgaria

€ 2³⁰ 
4⁵⁰ BGN

ended

ulpia-aurea (730)

In the realm of ingenuity

€ 2²⁰ 
4³⁰ BGN

ended

ulpia-aurea (730)