Turn Your Bookshelf Into a 
Complete 
Science Library 
21-Volume 
for Only $39.95. 
"Irrational 
Numbers"— Dedekind 
"Cybernetics" —Wiener 
"Behind the Flying 
Saucers" —Scully 
"Four Basic Elements" 
— Aristotle 
"Computer and the 
Brain” —Neumann 
"Division of Figures" 
—Euclid 
A Science Education 
from A to Z 
SOME OF THE 
CONCEPTS COVERED 
"Men and Numbers" 
—Muir 
"Celestial Bodies" 
— Copernicus 
'Theory of Relativity" 
—Einstein 
"Human Understanding" 
—Locke 
"Communications in 
the Space Age" 
— Kappel 
"Creative Evolution" 
—Bergson 
"Origin of Species' 
—Darwin 
"Burning-sphere" 
— Alhazen 
From the ABC of Relativity by Bertrand Russell, 
to Zeno’s paradoxes, this 21 -volume library pro- 
vides a complete and fascinating science education. 
Unlike an encyclopedia, this reference work is one 
you can read for pure enjoyment as well as refer to 
for reliable information. The kev to this readability 
is the fact that THE REALM OF SCIENCE is ac- 
tually a massive collection of selected writings ar- 
ranged and indexed by subject. It is so complete, 
that the cumulative index alone runs almost 200 
pages! 
Think of a subject, look it up, and read what the 
world’s foremost authorities have written about it. 
The Greatest Minds the 
World Has to Offer 
The authorities represented in this priceless collec- 
tion read like a “Who’s Who” in science. There’s 
Priestley on the discovery of oxygen; Faraday on 
electrochemistry; E.O. Wilson on sociobiology; 
Ernst Nagel on Godel’s proof. Plus Isaac Asimov, 
Jacob Bronowski, Martin Gardner, Max Planck, 
James Watson, George Gamow, Fritz Zwicky, and 
hundreds more. From ancient Babylonia to the pre- 
sent, you will be exposed to the greatest minds the 
world has to offer. 
Einstein's 
special theory 
of relativity 
changed our 
concept of 
time, distance 
and mass. 
A Valuable Research Tool 
Although each volume contains its own index, the 
unique Science Concept Index "brings it all 
together.” It will help you find vital information on 
a given subject, person, place or idea throughout the 
set. It will also enable you to trace various applica- 
tions of a subject from one author to another, from 
one concept to another, or from one discipline to 
another. Imagine what a valuable research tool this 
can be. Taken as a whole, this 21-volume set pro- 
vides an overview of science never before possible in 
a single work. 
-Air 
-Astronomy 
-Atoms 
-Ailoms-Laws- 
Principles 
-Behavior 
-Biology 
-Cells 
-Chemistry 
-Communication 
-Computers 
-Conservation 
-Continuity 
-Cosmology 
-Desert 
-Earth 
-Ecology 
-Electricity and 
Magnetism 
-Elements 
-Embryology 
-Energy 
-Entropy 
-Equilibrium 
-Evolution 
-Force 
-Genetics and 
Heredity 
-Geology 
-Gravity 
-Heat 
-Heredity 
-Instruments and 
Apparatus 
— Infinity 
— Insight 
— Knowledge 
— Light and Optics 
—Logic 
— Man 
— Mathematics 
— Matter 
— Measurement 
— Mechanics 
— Metabolism 
— Molecules 
— Motion and 
Momentum 
— Nebulae 
— Nuclear 
—Oceans. Seas and 
Water 
— Paradoxes 
— Parity 
— Photosynthesis 
— Physics 
—Planets 
—Pollution 
—Population 
— Radiation 
—Relativity 
— Reproduction 
—Space 
—Structure and Form 
—Systems 
—Technology 
— Temperature 
—Time 
J . 
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completely satisfied. I may return it within 30 days for a full 
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OF SCIENCE yearbook as described in this advertisement. 
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To keep you informed of the latest scientific 
developments and to keep your 21-volume set up-to- 
date, vou will also be entitled to receive — at vour op- 
tion— the fully illustrated REALM OF SCIENCE 
yearbook. 
At an appropriate time, you will receive advance 
notification fully describing the upcoming yearbook 
and will have the option of refusing it if you wish. 
Barnes & Noble will guarantee the price of S9.9S 
(plus shipping and applicable taxes) for the first 
three years. However, you are under no obligation 
to ever buy a yearbook. 
Act Now. . . 
Our Supply is Limited 
THE REALM OF SCIENCE originally sold for 
S 149.95. Until the supply lasts (W e purchased the re- 
maining inventory from the publisher), Barnes & 
Noble is offering the complete 21-volume set for 
only S39.95. That's about one-fourth of its original 
price. . . a discount of 73 percent! 
Act now. and you won’t be disappointed. (Each 
big i" x 10" hardcovered volume contains almost 
200 pages and is fully illustrated.) If you are not 
completely satisfied with the set. return it within 30 
days and the purchase price will be refunded. 
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