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RT @jakehosen: Secchi created a way to measure water clarity way back in 1864. Science was different back then – Secchi developed his metho…
RT @jakehosen: Secchi created a way to measure water clarity way back in 1864. Science was different back then – Secchi developed his metho…
RT @jakehosen: Secchi created a way to measure water clarity way back in 1864. Science was different back then – Secchi developed his metho…
RT @jakehosen: Secchi created a way to measure water clarity way back in 1864. Science was different back then – Secchi developed his metho…
attention #fieldecol18 https://t.co/766y6ziq0x