Practical hints for investors, by Walker Van Riper von Van Riper, Walker

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What every investor should know; an inquiry into the economic and political tendencies of the times and their effect on investment securities by Walker M. Van Riper von Van Riper, Walker M

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Guide to the winter birds of Colorado / Richard G. Beidleman ; drawings by Dominick O. D'Ostilio ; photographs by Walker Van Riper von Beidleman, Richard G

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DDT and the Black Widow Spider von Van Riper, Walker

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Aesthetic Notions in Animal Breeding von van Riper, Walker

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Looking for Trouble: Preventive Genomic Sequencing in the General Population and the Role of Patient Choice von Lázaro-Muñoz, Gabriel, Conley, John M., Davis, Arlene M., Van Riper, Marcia, Walker, Rebecca L., Juengst, Eric T.

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Response to Open Peer Commentaries on "Looking for Trouble: Preventive Genomic Sequencing in the General Population and the Role of Patient Choice" von Lázaro-Muñoz, Gabriel, Conley, John M., Davis, Arlene M., Van Riper, Marcia, Walker, Rebecca L., Juengst, Eric T.

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Guide to Some Common Colorado Spiders . Walker van Riper von Kaston, B. J.

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The Black Widow Spider von D'Amour, Fred E., Becker, Frances E., van Riper, Walker

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Estimating a Hummingbird Population von Van Riper, Walker

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Hummingbird Feeding Preferences von Van Riper, Walker

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Spiders of Connecticut. Benjamin Julian Kaston von van Riper, Walker

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How to Know the Spiders. Pictured-Keys for Determining the More Common Spiders, with Suggestions for Collecting and Studying Them. B. J. Kaston , Elizabeth Kaston von van Riper, Walker

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Homing Not Hindered by Wing Magnets von Van Riper, Walker, Kalmbach, E. R.

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Dandelion exterminator von RIPER WALKER VAN

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How to Know the Spiders. Pictured-Keys for Determining the More Common Spiders, with Suggestions for Collecting and Studying Them von van Riper, Walker

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Spiders of Connecticut von van Riper, Walker

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HOW A RATTLESNAKE STRIKES von Van Riper, Walker

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How a Rattlesnake Strikes: An investigation with high-speed photography probes a question of some interest to herpetologists as well as potential victims: Does it stab you with its... von Walker Van Riper

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Incorporating multilevel values into the social-ecological systems framework von van Riper, Carena J., Thiel, Andreas, Penker, Marianne, Braito, Michael, Landon, Adam C., Thomsen, Jennifer M., Tucker, Catherine M.

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