19．Chairman Mao Tse-tung Talks with Guests from Asia,Africa and Latin America&(A.R.) 1
(Same as above)&(S.R.) 6
20．The Solar System&(A.R.) 10
The Sun;U S.S.R Builds Solar Boiler&(S.R.) 14
21．The Thought of Mao Tse-tung is the Victoriou Banner of the Great Revolution of the Chinese People&(A.R.) 18
(Same as above)&(S.R.) 24
22．The Chemist in the Steel Mill&(A.R.) 27
(Same as above)&(S.R.) 32
23．Inside the Atom&(A.R.) 35
Eyes That See Through Atoms&(S.R.) 40
24．The Technical Transformation of China's Agriculture&(A.R.) 42
(Same as above)&(S.R.) 47
25．The Properties of Gases&(A.R.) 50
Gas Analysis&(S.R.) 55
26．Electricity Today&(A.R.) 58
(Same as above)&(S.R.) 63
27．Agriculture:Foundation of the National Economy&(A.R.) 66
(Same as above)&(S.R.) 72
28．The Physical Properties of Substances&(A.R.) 75
The Nature and Properties of Matter&(S.R.) 80
29．Elements,Compounds and Mixtures&(A.R.) 83
Elements,Elementary Substances and Compounds&(S.R.) 88
30．Long Live Leninism&(A.R.) 91
(Same as above)&(S.R.) 95
31．Satellite Will Be Useful&(A.R.) 99
Earth Satellite,The Second Artificial Earth Satellite&(S.R.) 104
32．Heat,Steam,and Power&(A.R.) 108
(Same as above)&(S.R.) 113
33．Northeast China—Heavy Industry Base&(A.R.) 115
Everyone a Geologist&(S.R.) 121
34．China's Chemical Fertilizer Industry Leaps Forward&(A.R.) 127
(Same as above)&(S.R.) 132
35．Radioactive Elements&(A.R.) 135
Radioactivity;What is An Isotope?&(S.R.) 140
36．Ultrasonics&(A.R.) 143
Ultrasonic Waves in Our Life&(S.R.) 148
37．New Atomic Reactor and Cyclotron&(A.R.) 151
Atomic Fission&(S.R.) 158