These tiny beads are made of a super absorbent polymer that can soak up a surprising amount of water. Plus, since they are almost entirely water when fully absorbed, they have the same refraction index as water and become invisible.  ...

Three teeth displayed in an acrylic case. A perfect addition for your fossil collection.     Ethically sourced. Please allow for slight variation.

These tablets may be small, but they do a world of good. When added to contaminated water, Aquatabs slowly release chlorine to reduce bacteria by 99.9999% and viruses by 99.99%—including cholera, typhoid, dysentery and other water-borne diseases. These tablets can...

Authors: Walter Langbein and William Hoyt Publisher: The Ronald Press Company, New York, 1959 Condition: Very Good "This book surveys a vast field of work that is great importance to the nation's future: all the many ceaseless activities throughout the...

Authors: Betty Bergersen, Elsie Krug  Publisher: The C.V. Mosby Company, 1966 Condition: Very good  

Author: Don Johnstone and William Cross Publisher: The Ronald Press Company, 1949 Condition: Excellent

"Although community level toxicity testing is now being used for practical purposes, it is not the intent of this book to espouse the use of community level testing in all situations or to replace single-species tests that are the best...

Author: Linvil Rich Publisher: McGraw Hill Book Company, 1973 Condition: Very Good

Author: Glenford Myers Publisher: John Wiley and Sons, New York, 1967, first ed.  Condition: Excellent. Dust Jacket has some wear but book itself is in wonderful condition, especially for it's age.  

Authors: International Astronomical Union, from symposium No. 32. Organized by the IAU in cooperation with IUGG held in Stresa, Italy, 21-25 of March, 1967 Publisher: R. Reidel Publishing Company, New York, 1968 Condition: Very good   "A study of the...

Author: P. H. Kuenen Publisher: John Wiley and Sons Condition: Very good

Authors: American Society of Engineers, 1961 Book spine has some clear tape. Contains a library pocket. Pages are in great condition. Several fold out pages.  Bergeron, L., 1950. Du Coup de Bélier en Hydraulique - Au Coup de Foudre en...

This vintage text is in very good condition.  This text is aimed at recording data collected and the main results of hydrological studies undertaken within the framework of the Decade as well as providing information on research techniques.  VOLUME 2...

Used Condition: Very good  The result of the first series of multidisciplinary investigations of the Caribbean barrier reef complex near Carrie Bow Cay, Belize as reported in 34 papers in this volume. "This volume thus represents the culmination of research...

Published in 1964 "It is the intention of this text to continue to regard the marine sciences with all their various facets as a unity. " Editor: Harold Barnes

Published in 1965 Author: Harold Barnes Library sleeve inside "It is the intention of this text to continue to regard the marine sciences with all their various facets as a unity. "

Special Report No. 28 Authors: B.H. Weil, Poagie E. Murray, George W. Reid, and Robert S Ingols Year: 1948 Gently used, library pocket in front cover "This bibliography was prepared in an effort to bring together an indeed guide of the...

Practical Methods for Observing and Forecasting Ocean Waves by means of Wave Spectra and Statistics Used Condition: Good Published: 1955 U.S. Navy Hydrographic Office Contains a few stamps and library pocket.  Comes with graphs in back pocket