73037765
Nov 21, 1974
Feb 10, 1976
APPARATUS FOR TEACHING ABOUT WATER ANALYSIS, CHEMICAL REACTIONS, ELECTRONICS, GENETICS, BLOOD AND GENERAL SCIENCE AND BIOLOGY
Electrical and Scientific ApparatusEDUCATIONAL KITS CONSISTING OF STUDY AND PLAY KITS FOR WATER, ANALYSIS (OTHER THAN AN APPARATUS), CHEMICAL REACTIONS, ELECTRONICS, GENETICS, BLOOD AND GENERAL SCIENCE AND BIOLOGY MODELS
Paper Goods and Printed Matter