✦ LIBER ✦

Decline of monarch butterflies overwintering in Mexico: is the migratory phenomenon at risk?

✍ Scribed by LINCOLN P. BROWER; ORLEY R. TAYLOR; ERNEST H. WILLIAMS; DANIEL A. SLAYBACK; RAUL R. ZUBIETA; M. ISABEL RAMÍREZ

No coin nor oath required. For personal study only.

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