Vol. s4-47, Issue 280, 1919April 01, 1919 EDT
Co-operation in Advanced Geologic Instruction
Co-operation in Advanced Geologic Instruction
Herbert Ernest Gregory,
Gregory, H. E. (1919). Co-operation in Advanced Geologic Instruction. American Journal of Science, s4-47(280), 281–286. https://doi.org/10.2475/ajs.s4-47.280.281