SUBJECT
Electronic books
601
Management
126
Data processing
74
Mathematical models
67
Research
60
Design and construction
55
Mathematics
53
Accounting
52
Methodology
43
Statistical methods
41
Project management
40
Strategic planning
40
Environmental aspects
39
History
39
Psychology
37
Calculus
36
Statistics
32
Economic aspects
31
Finance
31
Materials
31
Philosophy
31
Information technology
29
Mathematical statistics
29
Chemistry
28
Social aspects
27
Technological innovations
27
Analysis
26
Physics
26
Differential equations
25
Thermodynamics
25
Wireless communication systems
25
Social sciences
23
Study and teaching
23
Ecology
22
Marketing
22
Biochemistry
21
Data mining
21
Food
21
History and criticism
21
Leadership
21
Planning
21
Chemistry, Organic
20
Computer simulation
19
Industrial management
19
Probabilities
19
Social media
19
Systems engineering
19
Computer networks
18
Econometrics
18
Decision making
17
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